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update preg_split() and preg_quote examples

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git-svn-id: https://svn.php.net/repository/phpdoc/en/trunk@29415 c90b9560-bf6c-de11-be94-00142212c4b1
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Monte Ohrt 2000-07-31 16:11:27 +00:00
parent d5292588e7
commit 5d7cdfbcc5
1 changed files with 11 additions and 15 deletions
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26
functions/pcre.xml
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@ -474,13 +474,10 @@ $text = preg_replace ($search, $replace, $document);
<example>
<title>Getting parts of search string</title>
<programlisting role="php">
// split the phrase by any number of commas or space characters,
// which include " ", \r, \t, \n and \f
$keywords = preg_split ("/[\s,]+/", "hypertext language, programming");
</programlisting>
<para>
This example splits the text by any number of spaces or
commas. So the resulting $keywords array would be ("hypertext",
"language", "programming")
</para>
</example>
See also <function>preg_match</function>,
<function>preg_match_all</function>, and
@ -533,19 +530,17 @@ echo $keywords; // returns \$40 for a g3\/400
<example>
<title>Italicizing a word within some text</title>
<programlisting role="php">
// In this example, preg_quote($word) is used to keep the
// asterisks from having special meaning to the regular
// expression.
$textbody = "This book is *very* difficult to find.";
$word = "*very*";
$textbody = preg_replace ("|\b".preg_quote($word)."\b|",
$textbody = preg_replace ("/".preg_quote($word)."/",
"&lt;i&gt;".$word."&lt;/i&gt;",
$textbody);
</programlisting>
<para>
In this example, preg_quote($word) is used to keep the
asterisks from having special meaning to the regular
expression. The \b is recognized by pcre to find a word
boundary, so only whole words match. This way something like
"is*very*difficult" would not be considered a match.
</para>
</example>
</para>
</refsect1>
@ -577,8 +572,9 @@ $textbody = preg_replace ("|\b".preg_quote($word)."\b|",
<example>
<title><function>preg_grep</function> example</title>
<programlisting role="php">
preg_grep ("/^(\d+)?\.\d+$/", $array); // find all array elements
// containing floating point numbers
// return all array elements
// containing floating point numbers
$fl_array = preg_grep ("/^(\d+)?\.\d+$/", $array);
</programlisting>
</example>
</para>