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WS. prepare for new doc style
git-svn-id: https://svn.php.net/repository/phpdoc/en/trunk@181961 c90b9560-bf6c-de11-be94-00142212c4b1
This commit is contained in:
Nuno Lopes
parent
773763148a
commit
e5dacc095d
2 changed files with 287 additions and 301 deletions
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@ -1,104 +1,100 @@
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<?xml version="1.0" encoding="iso-8859-1"?>
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<!-- $Revision: 1.9 $ -->
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<!-- $Revision: 1.10 $ -->
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<!-- splitted from ./en/functions/pcre.xml, last change in rev 1.47 -->
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<refentry id="function.preg-replace-callback">
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<refnamediv>
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<refname>preg_replace_callback</refname>
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<refpurpose>Perform a regular expression search and replace using a callback</refpurpose>
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</refnamediv>
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<refsect1>
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<title>Description</title>
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<methodsynopsis>
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<type>mixed</type><methodname>preg_replace_callback</methodname>
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<methodparam><type>mixed</type><parameter>pattern</parameter></methodparam>
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<methodparam><type>callback</type><parameter>callback</parameter></methodparam>
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||||
<methodparam><type>mixed</type><parameter>subject</parameter></methodparam>
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<methodparam choice="opt"><type>int</type><parameter>limit</parameter></methodparam>
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</methodsynopsis>
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<para>
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The behavior of this function is almost identical to
|
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<function>preg_replace</function>, except for the fact that instead of
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<parameter>replacement</parameter> parameter, one should specify a
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<parameter>callback</parameter> that will be called and passed an array of
|
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matched elements in the subject string. The callback should return the
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replacement string.
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</para>
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<example>
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<title><function>preg_replace_callback</function> example</title>
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<programlisting role='php'>
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<refentry id="function.preg-replace-callback">
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<refnamediv>
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<refname>preg_replace_callback</refname>
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<refpurpose>Perform a regular expression search and replace using a callback</refpurpose>
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</refnamediv>
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||||
<refsect1>
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<title>Description</title>
|
||||
<methodsynopsis>
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<type>mixed</type><methodname>preg_replace_callback</methodname>
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<methodparam><type>mixed</type><parameter>pattern</parameter></methodparam>
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<methodparam><type>callback</type><parameter>callback</parameter></methodparam>
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<methodparam><type>mixed</type><parameter>subject</parameter></methodparam>
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<methodparam choice="opt"><type>int</type><parameter>limit</parameter></methodparam>
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</methodsynopsis>
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<para>
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||||
The behavior of this function is almost identical to
|
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<function>preg_replace</function>, except for the fact that instead of
|
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<parameter>replacement</parameter> parameter, one should specify a
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<parameter>callback</parameter> that will be called and passed an array of
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matched elements in the subject string. The callback should return the
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replacement string.
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</para>
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<example>
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<title><function>preg_replace_callback</function> example</title>
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<programlisting role='php'>
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<![CDATA[
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<?php
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// this text was used in 2002
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// we want to get this up to date for 2003
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$text = "April fools day is 04/01/2002\n";
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$text.= "Last christmas was 12/24/2001\n";
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// the callback function
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function next_year($matches)
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{
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// as usual: $matches[0] is the complete match
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// $matches[1] the match for the first subpattern
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// enclosed in '(...)' and so on
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return $matches[1].($matches[2]+1);
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}
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echo preg_replace_callback(
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"|(\d{2}/\d{2}/)(\d{4})|",
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"next_year",
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$text);
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// result is:
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// April fools day is 04/01/2003
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// Last christmas was 12/24/2002
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// this text was used in 2002
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// we want to get this up to date for 2003
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$text = "April fools day is 04/01/2002\n";
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$text.= "Last christmas was 12/24/2001\n";
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// the callback function
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function next_year($matches)
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{
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// as usual: $matches[0] is the complete match
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// $matches[1] the match for the first subpattern
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// enclosed in '(...)' and so on
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return $matches[1].($matches[2]+1);
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}
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echo preg_replace_callback(
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"|(\d{2}/\d{2}/)(\d{4})|",
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"next_year",
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$text);
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// result is:
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// April fools day is 04/01/2003
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// Last christmas was 12/24/2002
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?>
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]]>
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</programlisting>
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</example>
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<para>
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You'll often need the <parameter>callback</parameter> function
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for a <function>preg_replace_callback</function> in just one place.
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In this case you can use <function>create_function</function> to
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declare an anonymous function as callback within the call to
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<function>preg_replace_callback</function>. By doing it this way
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you have all information for the call in one place and do not
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clutter the function namespace with a callback functions name
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not used anywhere else.
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</para>
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<example>
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<title><function>preg_replace_callback</function> and <function>create_function</function></title>
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<programlisting role='php'>
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</programlisting>
|
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</example>
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<para>
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You'll often need the <parameter>callback</parameter> function
|
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for a <function>preg_replace_callback</function> in just one place.
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In this case you can use <function>create_function</function> to
|
||||
declare an anonymous function as callback within the call to
|
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<function>preg_replace_callback</function>. By doing it this way
|
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you have all information for the call in one place and do not
|
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clutter the function namespace with a callback functions name
|
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not used anywhere else.
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</para>
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<example>
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<title><function>preg_replace_callback</function> and <function>create_function</function></title>
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<programlisting role='php'>
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<![CDATA[
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<?php
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/* a unix-style command line filter to convert uppercase
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* letters at the beginning of paragraphs to lowercase */
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$fp = fopen("php://stdin", "r") or die("can't read stdin");
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while (!feof($fp)) {
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$line = fgets($fp);
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$line = preg_replace_callback(
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'|<p>\s*\w|',
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create_function(
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// single quotes are essential here,
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// or alternative escape all $ as \$
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'$matches',
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'return strtolower($matches[0]);'
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),
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$line
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);
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echo $line;
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}
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fclose($fp);
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/* a unix-style command line filter to convert uppercase
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* letters at the beginning of paragraphs to lowercase */
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$fp = fopen("php://stdin", "r") or die("can't read stdin");
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while (!feof($fp)) {
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$line = fgets($fp);
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$line = preg_replace_callback(
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'|<p>\s*\w|',
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create_function(
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// single quotes are essential here,
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// or alternative escape all $ as \$
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'$matches',
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'return strtolower($matches[0]);'
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),
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$line
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);
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echo $line;
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}
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fclose($fp);
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?>
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]]>
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</programlisting>
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</example>
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<para>
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See also <function>preg_replace</function>,
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<function>create_function</function>,
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&listendand; &seealso.callback;.
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</para>
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</refsect1>
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</refentry>
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</programlisting>
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</example>
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<para>
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See also <function>preg_replace</function>,
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<function>create_function</function>,
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&listendand; &seealso.callback;.
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</para>
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</refsect1>
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</refentry>
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<!-- Keep this comment at the end of the file
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Local variables:
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|
|
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@ -1,56 +1,56 @@
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<?xml version="1.0" encoding="iso-8859-1"?>
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<!-- $Revision: 1.14 $ -->
|
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<!-- $Revision: 1.15 $ -->
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<!-- splitted from ./en/functions/pcre.xml, last change in rev 1.2 -->
|
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<refentry id="function.preg-replace">
|
||||
<refnamediv>
|
||||
<refname>preg_replace</refname>
|
||||
<refpurpose>Perform a regular expression search and replace</refpurpose>
|
||||
</refnamediv>
|
||||
<refsect1>
|
||||
<title>Description</title>
|
||||
<methodsynopsis>
|
||||
<type>mixed</type><methodname>preg_replace</methodname>
|
||||
<methodparam><type>mixed</type><parameter>pattern</parameter></methodparam>
|
||||
<methodparam><type>mixed</type><parameter>replacement</parameter></methodparam>
|
||||
<methodparam><type>mixed</type><parameter>subject</parameter></methodparam>
|
||||
<methodparam choice="opt"><type>int</type><parameter>limit</parameter></methodparam>
|
||||
</methodsynopsis>
|
||||
<para>
|
||||
Searches <parameter>subject</parameter> for matches to
|
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<parameter>pattern</parameter> and replaces them with
|
||||
<parameter>replacement</parameter>. If
|
||||
<parameter>limit</parameter> is specified, then only
|
||||
<parameter>limit</parameter> matches will be replaced; if
|
||||
<parameter>limit</parameter> is omitted or is -1, then all
|
||||
matches are replaced.
|
||||
</para>
|
||||
<para>
|
||||
<parameter>Replacement</parameter> may contain references of the form
|
||||
<literal>\\<replaceable>n</replaceable></literal> or (since PHP 4.0.4)
|
||||
<literal><replaceable>$n</replaceable></literal>, with the latter form
|
||||
being the preferred one. Every such reference will be replaced by the text
|
||||
captured by the <replaceable>n</replaceable>'th parenthesized pattern.
|
||||
<replaceable>n </replaceable>can be from 0 to 99, and
|
||||
<literal>\\0</literal> or <literal>$0</literal> refers to the text matched
|
||||
by the whole pattern. Opening parentheses are counted from left to right
|
||||
(starting from 1) to obtain the number of the capturing subpattern.
|
||||
</para>
|
||||
<para>
|
||||
When working with a replacement pattern where a backreference is immediately
|
||||
followed by another number (i.e.: placing a literal number immediately
|
||||
after a matched pattern), you cannot use the familiar <literal>\\1</literal>
|
||||
notation for your backreference. <literal>\\11</literal>, for example,
|
||||
would confuse <function>preg_replace</function> since it does not know whether
|
||||
you want the <literal>\\1</literal> backreference followed by a literal <literal>1</literal>,
|
||||
or the <literal>\\11</literal> backreference followed by nothing. In this case
|
||||
the solution is to use <literal>\${1}1</literal>. This creates an
|
||||
isolated <literal>$1</literal> backreference, leaving the <literal>1</literal>
|
||||
as a literal.
|
||||
</para>
|
||||
<para>
|
||||
<example>
|
||||
<title>Using backreferences followed by numeric literals</title>
|
||||
<programlisting role="php">
|
||||
<refentry id="function.preg-replace">
|
||||
<refnamediv>
|
||||
<refname>preg_replace</refname>
|
||||
<refpurpose>Perform a regular expression search and replace</refpurpose>
|
||||
</refnamediv>
|
||||
<refsect1>
|
||||
<title>Description</title>
|
||||
<methodsynopsis>
|
||||
<type>mixed</type><methodname>preg_replace</methodname>
|
||||
<methodparam><type>mixed</type><parameter>pattern</parameter></methodparam>
|
||||
<methodparam><type>mixed</type><parameter>replacement</parameter></methodparam>
|
||||
<methodparam><type>mixed</type><parameter>subject</parameter></methodparam>
|
||||
<methodparam choice="opt"><type>int</type><parameter>limit</parameter></methodparam>
|
||||
</methodsynopsis>
|
||||
<para>
|
||||
Searches <parameter>subject</parameter> for matches to
|
||||
<parameter>pattern</parameter> and replaces them with
|
||||
<parameter>replacement</parameter>. If
|
||||
<parameter>limit</parameter> is specified, then only
|
||||
<parameter>limit</parameter> matches will be replaced; if
|
||||
<parameter>limit</parameter> is omitted or is -1, then all
|
||||
matches are replaced.
|
||||
</para>
|
||||
<para>
|
||||
<parameter>Replacement</parameter> may contain references of the form
|
||||
<literal>\\<replaceable>n</replaceable></literal> or (since PHP 4.0.4)
|
||||
<literal><replaceable>$n</replaceable></literal>, with the latter form
|
||||
being the preferred one. Every such reference will be replaced by the text
|
||||
captured by the <replaceable>n</replaceable>'th parenthesized pattern.
|
||||
<replaceable>n </replaceable>can be from 0 to 99, and
|
||||
<literal>\\0</literal> or <literal>$0</literal> refers to the text matched
|
||||
by the whole pattern. Opening parentheses are counted from left to right
|
||||
(starting from 1) to obtain the number of the capturing subpattern.
|
||||
</para>
|
||||
<para>
|
||||
When working with a replacement pattern where a backreference is immediately
|
||||
followed by another number (i.e.: placing a literal number immediately
|
||||
after a matched pattern), you cannot use the familiar <literal>\\1</literal>
|
||||
notation for your backreference. <literal>\\11</literal>, for example,
|
||||
would confuse <function>preg_replace</function> since it does not know whether
|
||||
you want the <literal>\\1</literal> backreference followed by a literal <literal>1</literal>,
|
||||
or the <literal>\\11</literal> backreference followed by nothing. In this case
|
||||
the solution is to use <literal>\${1}1</literal>. This creates an
|
||||
isolated <literal>$1</literal> backreference, leaving the <literal>1</literal>
|
||||
as a literal.
|
||||
</para>
|
||||
<para>
|
||||
<example>
|
||||
<title>Using backreferences followed by numeric literals</title>
|
||||
<programlisting role="php">
|
||||
<![CDATA[
|
||||
<?php
|
||||
$string = "April 15, 2003";
|
||||
|
|
@ -59,229 +59,219 @@ $replacement = "\${1}1,\$3";
|
|||
echo preg_replace($pattern, $replacement, $string);
|
||||
?>
|
||||
]]>
|
||||
</programlisting>
|
||||
<para>
|
||||
This example will output :
|
||||
</para>
|
||||
<screen>
|
||||
</programlisting>
|
||||
<para>
|
||||
This example will output :
|
||||
</para>
|
||||
<screen>
|
||||
<![CDATA[
|
||||
April1,2003
|
||||
]]>
|
||||
</screen>
|
||||
</example>
|
||||
</para>
|
||||
<para>
|
||||
If matches are found, the new <parameter>subject</parameter> will
|
||||
be returned, otherwise <parameter>subject</parameter> will be
|
||||
returned unchanged.
|
||||
</para>
|
||||
<para>
|
||||
Every parameter to <function>preg_replace</function> (except
|
||||
<parameter>limit</parameter>) can be an unidimensional array.
|
||||
When using arrays with <parameter>pattern</parameter> and
|
||||
<parameter>replacement</parameter>, the keys are processed in the order
|
||||
they appear in the array. This is <emphasis>not necessarily</emphasis>
|
||||
the same as the numerical index order. If you use indexes to identify
|
||||
which <parameter>pattern</parameter> should be replaced by which
|
||||
<parameter>replacement</parameter>, you should perform a
|
||||
<function>ksort</function> on each array prior to calling
|
||||
<function>preg_replace</function>.
|
||||
</para>
|
||||
<para>
|
||||
<example>
|
||||
<title>Using indexed arrays with <function>preg_replace</function></title>
|
||||
<programlisting role="php">
|
||||
</screen>
|
||||
</example>
|
||||
</para>
|
||||
<para>
|
||||
If matches are found, the new <parameter>subject</parameter> will
|
||||
be returned, otherwise <parameter>subject</parameter> will be
|
||||
returned unchanged.
|
||||
</para>
|
||||
<para>
|
||||
Every parameter to <function>preg_replace</function> (except
|
||||
<parameter>limit</parameter>) can be an unidimensional array.
|
||||
When using arrays with <parameter>pattern</parameter> and
|
||||
<parameter>replacement</parameter>, the keys are processed in the order
|
||||
they appear in the array. This is <emphasis>not necessarily</emphasis>
|
||||
the same as the numerical index order. If you use indexes to identify
|
||||
which <parameter>pattern</parameter> should be replaced by which
|
||||
<parameter>replacement</parameter>, you should perform a
|
||||
<function>ksort</function> on each array prior to calling
|
||||
<function>preg_replace</function>.
|
||||
</para>
|
||||
<para>
|
||||
<example>
|
||||
<title>Using indexed arrays with <function>preg_replace</function></title>
|
||||
<programlisting role="php">
|
||||
<![CDATA[
|
||||
<?php
|
||||
$string = "The quick brown fox jumped over the lazy dog.";
|
||||
|
||||
$patterns[0] = "/quick/";
|
||||
$patterns[1] = "/brown/";
|
||||
$patterns[2] = "/fox/";
|
||||
|
||||
$replacements[2] = "bear";
|
||||
$replacements[1] = "black";
|
||||
$replacements[0] = "slow";
|
||||
|
||||
echo preg_replace($patterns, $replacements, $string);
|
||||
?>
|
||||
]]>
|
||||
</programlisting>
|
||||
<para>
|
||||
Output:
|
||||
</para>
|
||||
<screen>
|
||||
</programlisting>
|
||||
<para>
|
||||
Output:
|
||||
</para>
|
||||
<screen>
|
||||
<![CDATA[
|
||||
The bear black slow jumped over the lazy dog.
|
||||
]]>
|
||||
</screen>
|
||||
<para>
|
||||
By ksorting patterns and replacements, we should get what we wanted.
|
||||
</para>
|
||||
<programlisting role="php">
|
||||
</screen>
|
||||
<para>
|
||||
By ksorting patterns and replacements, we should get what we wanted.
|
||||
</para>
|
||||
<programlisting role="php">
|
||||
<![CDATA[
|
||||
<?php
|
||||
|
||||
ksort($patterns);
|
||||
ksort($replacements);
|
||||
|
||||
echo preg_replace($patterns, $replacements, $string);
|
||||
|
||||
?>
|
||||
]]>
|
||||
</programlisting>
|
||||
<para>
|
||||
Output :
|
||||
</para>
|
||||
<screen>
|
||||
</programlisting>
|
||||
<para>
|
||||
Output :
|
||||
</para>
|
||||
<screen>
|
||||
<![CDATA[
|
||||
The slow black bear jumped over the lazy dog.
|
||||
]]>
|
||||
</screen>
|
||||
</example>
|
||||
</para>
|
||||
<para>
|
||||
If <parameter>subject</parameter> is an array, then the search
|
||||
and replace is performed on every entry of
|
||||
<parameter>subject</parameter>, and the return value is an array
|
||||
as well.
|
||||
</para>
|
||||
<para>
|
||||
If <parameter>pattern</parameter> and <parameter>replacement</parameter>
|
||||
are arrays, then <function>preg_replace</function> takes a value from
|
||||
each array and uses them to do search and replace on
|
||||
<parameter>subject</parameter>. If <parameter>replacement</parameter>
|
||||
has fewer values than <parameter>pattern</parameter>, then empty string
|
||||
is used for the rest of replacement values. If <parameter>pattern
|
||||
</parameter> is an array and <parameter>replacement</parameter> is a
|
||||
string, then this replacement string is used for every value of
|
||||
<parameter>pattern</parameter>. The converse would not make sense,
|
||||
though.
|
||||
</para>
|
||||
<para>
|
||||
The <literal>e</literal> modifier makes <function>preg_replace</function>
|
||||
treat the <parameter>replacement</parameter> parameter as PHP code after
|
||||
the appropriate references substitution is done. Tip: make sure that
|
||||
<parameter>replacement</parameter> constitutes a valid PHP code string,
|
||||
otherwise PHP will complain about a parse error at the line containing
|
||||
<function>preg_replace</function>.
|
||||
</para>
|
||||
<para>
|
||||
<example>
|
||||
<title>Replacing several values</title>
|
||||
<programlisting role="php">
|
||||
</screen>
|
||||
</example>
|
||||
</para>
|
||||
<para>
|
||||
If <parameter>subject</parameter> is an array, then the search
|
||||
and replace is performed on every entry of
|
||||
<parameter>subject</parameter>, and the return value is an array
|
||||
as well.
|
||||
</para>
|
||||
<para>
|
||||
If <parameter>pattern</parameter> and <parameter>replacement</parameter>
|
||||
are arrays, then <function>preg_replace</function> takes a value from
|
||||
each array and uses them to do search and replace on
|
||||
<parameter>subject</parameter>. If <parameter>replacement</parameter>
|
||||
has fewer values than <parameter>pattern</parameter>, then empty string
|
||||
is used for the rest of replacement values. If <parameter>pattern
|
||||
</parameter> is an array and <parameter>replacement</parameter> is a
|
||||
string, then this replacement string is used for every value of
|
||||
<parameter>pattern</parameter>. The converse would not make sense,
|
||||
though.
|
||||
</para>
|
||||
<para>
|
||||
The <literal>e</literal> modifier makes <function>preg_replace</function>
|
||||
treat the <parameter>replacement</parameter> parameter as PHP code after
|
||||
the appropriate references substitution is done. Tip: make sure that
|
||||
<parameter>replacement</parameter> constitutes a valid PHP code string,
|
||||
otherwise PHP will complain about a parse error at the line containing
|
||||
<function>preg_replace</function>.
|
||||
</para>
|
||||
<para>
|
||||
<example>
|
||||
<title>Replacing several values</title>
|
||||
<programlisting role="php">
|
||||
<![CDATA[
|
||||
<?php
|
||||
$patterns = array ("/(19|20)(\d{2})-(\d{1,2})-(\d{1,2})/",
|
||||
"/^\s*{(\w+)}\s*=/");
|
||||
"/^\s*{(\w+)}\s*=/");
|
||||
$replace = array ("\\3/\\4/\\1\\2", "$\\1 =");
|
||||
echo preg_replace($patterns, $replace, "{startDate} = 1999-5-27");
|
||||
?>
|
||||
]]>
|
||||
</programlisting>
|
||||
<para>
|
||||
This example will produce:
|
||||
</para>
|
||||
<screen>
|
||||
</programlisting>
|
||||
<para>
|
||||
This example will produce:
|
||||
</para>
|
||||
<screen>
|
||||
<![CDATA[
|
||||
$startDate = 5/27/1999
|
||||
]]>
|
||||
</screen>
|
||||
</example>
|
||||
</para>
|
||||
<para>
|
||||
<example>
|
||||
<title>Using the 'e' modifier</title>
|
||||
<programlisting role="php">
|
||||
</screen>
|
||||
</example>
|
||||
</para>
|
||||
<para>
|
||||
<example>
|
||||
<title>Using the 'e' modifier</title>
|
||||
<programlisting role="php">
|
||||
<![CDATA[
|
||||
<?php
|
||||
preg_replace("/(<\/?)(\w+)([^>]*>)/e",
|
||||
"'\\1'.strtoupper('\\2').'\\3'",
|
||||
$html_body);
|
||||
"'\\1'.strtoupper('\\2').'\\3'",
|
||||
$html_body);
|
||||
?>
|
||||
]]>
|
||||
</programlisting>
|
||||
<para>
|
||||
This would capitalize all HTML tags in the input text.
|
||||
</para>
|
||||
</example>
|
||||
</para>
|
||||
</programlisting>
|
||||
<para>
|
||||
<example>
|
||||
<title>Convert HTML to text</title>
|
||||
<programlisting role="php">
|
||||
This would capitalize all HTML tags in the input text.
|
||||
</para>
|
||||
</example>
|
||||
</para>
|
||||
<para>
|
||||
<example>
|
||||
<title>Convert HTML to text</title>
|
||||
<programlisting role="php">
|
||||
<![CDATA[
|
||||
<?php
|
||||
// $document should contain an HTML document.
|
||||
// This will remove HTML tags, javascript sections
|
||||
// and white space. It will also convert some
|
||||
// common HTML entities to their text equivalent.
|
||||
|
||||
$search = array ("'<script[^>]*?>.*?</script>'si", // Strip out javascript
|
||||
"'<[\/\!]*?[^<>]*?>'si", // Strip out HTML tags
|
||||
"'([\r\n])[\s]+'", // Strip out white space
|
||||
"'&(quot|#34);'i", // Replace HTML entities
|
||||
"'&(amp|#38);'i",
|
||||
"'&(lt|#60);'i",
|
||||
"'&(gt|#62);'i",
|
||||
"'&(nbsp|#160);'i",
|
||||
"'&(iexcl|#161);'i",
|
||||
"'&(cent|#162);'i",
|
||||
"'&(pound|#163);'i",
|
||||
"'&(copy|#169);'i",
|
||||
"'&#(\d+);'e"); // evaluate as php
|
||||
|
||||
"'<[\/\!]*?[^<>]*?>'si", // Strip out HTML tags
|
||||
"'([\r\n])[\s]+'", // Strip out white space
|
||||
"'&(quot|#34);'i", // Replace HTML entities
|
||||
"'&(amp|#38);'i",
|
||||
"'&(lt|#60);'i",
|
||||
"'&(gt|#62);'i",
|
||||
"'&(nbsp|#160);'i",
|
||||
"'&(iexcl|#161);'i",
|
||||
"'&(cent|#162);'i",
|
||||
"'&(pound|#163);'i",
|
||||
"'&(copy|#169);'i",
|
||||
"'&#(\d+);'e"); // evaluate as php
|
||||
$replace = array ("",
|
||||
"",
|
||||
"\\1",
|
||||
"\"",
|
||||
"&",
|
||||
"<",
|
||||
">",
|
||||
" ",
|
||||
chr(161),
|
||||
chr(162),
|
||||
chr(163),
|
||||
chr(169),
|
||||
"chr(\\1)");
|
||||
|
||||
"",
|
||||
"\\1",
|
||||
"\"",
|
||||
"&",
|
||||
"<",
|
||||
">",
|
||||
" ",
|
||||
chr(161),
|
||||
chr(162),
|
||||
chr(163),
|
||||
chr(169),
|
||||
"chr(\\1)");
|
||||
$text = preg_replace($search, $replace, $document);
|
||||
?>
|
||||
]]>
|
||||
</programlisting>
|
||||
</example>
|
||||
</para>
|
||||
</programlisting>
|
||||
</example>
|
||||
</para>
|
||||
<para>
|
||||
<example>
|
||||
<title>Strip whitespace</title>
|
||||
<para>
|
||||
<example>
|
||||
<title>Strip whitespace</title>
|
||||
<para>
|
||||
This example strips excess whitespace from a string.
|
||||
</para>
|
||||
<programlisting role="php">
|
||||
This example strips excess whitespace from a string.
|
||||
</para>
|
||||
<programlisting role="php">
|
||||
<![CDATA[
|
||||
<?php
|
||||
$str = 'foo o';
|
||||
$str = preg_replace('/\s\s+/', ' ', $str);
|
||||
|
||||
// This will be 'foo o' now
|
||||
echo $str;
|
||||
?>
|
||||
]]>
|
||||
</programlisting>
|
||||
</example>
|
||||
</para>
|
||||
<note>
|
||||
<para>
|
||||
Parameter <parameter>limit</parameter> was added after PHP 4.0.1pl2.
|
||||
</para>
|
||||
</note>
|
||||
<para>
|
||||
See also <function>preg_match</function>,
|
||||
<function>preg_match_all</function>, and
|
||||
<function>preg_split</function>.
|
||||
</para>
|
||||
</refsect1>
|
||||
</refentry>
|
||||
</programlisting>
|
||||
</example>
|
||||
</para>
|
||||
<note>
|
||||
<para>
|
||||
Parameter <parameter>limit</parameter> was added after PHP 4.0.1pl2.
|
||||
</para>
|
||||
</note>
|
||||
<para>
|
||||
See also <function>preg_match</function>,
|
||||
<function>preg_match_all</function>, and
|
||||
<function>preg_split</function>.
|
||||
</para>
|
||||
</refsect1>
|
||||
</refentry>
|
||||
|
||||
<!-- Keep this comment at the end of the file
|
||||
Local variables:
|
||||
|
|
|
|||
Loading…
Reference in a new issue