mirror of
https://github.com/sigmasternchen/php-doc-en
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92f1b8b177
Closes GH-190. git-svn-id: https://svn.php.net/repository/phpdoc/en/trunk@352028 c90b9560-bf6c-de11-be94-00142212c4b1
136 lines
4.1 KiB
XML
136 lines
4.1 KiB
XML
<?xml version="1.0" encoding="utf-8"?>
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<!-- $Revision$ -->
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<refentry xml:id="function.mb-substr" xmlns="http://docbook.org/ns/docbook" xmlns:xlink="http://www.w3.org/1999/xlink">
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<refnamediv>
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<refname>mb_substr</refname>
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<refpurpose>Get part of string</refpurpose>
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</refnamediv>
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<refsect1 role="description">
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&reftitle.description;
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<methodsynopsis>
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<type>string</type><methodname>mb_substr</methodname>
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<methodparam><type>string</type><parameter>string</parameter></methodparam>
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<methodparam><type>int</type><parameter>start</parameter></methodparam>
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<methodparam choice="opt"><type class="union"><type>int</type><type>null</type></type><parameter>length</parameter><initializer>&null;</initializer></methodparam>
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<methodparam choice="opt"><type class="union"><type>string</type><type>null</type></type><parameter>encoding</parameter><initializer>&null;</initializer></methodparam>
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</methodsynopsis>
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<para>
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Performs a multi-byte safe
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<function>substr</function> operation based on
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number of characters. Position is
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counted from the beginning of
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<parameter>string</parameter>. First character's position is
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0. Second character position is 1, and so on.
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</para>
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</refsect1>
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<refsect1 role="parameters">
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&reftitle.parameters;
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<para>
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<variablelist>
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<varlistentry>
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<term><parameter>string</parameter></term>
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<listitem>
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<para>
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The <type>string</type> to extract the substring from.
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</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term><parameter>start</parameter></term>
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<listitem>
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<para>
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If <parameter>start</parameter> is non-negative, the returned string
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will start at the <parameter>start</parameter>'th position in
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<parameter>string</parameter>, counting from zero. For instance,
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in the string '<literal>abcdef</literal>', the character at
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position <literal>0</literal> is '<literal>a</literal>', the
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character at position <literal>2</literal> is
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'<literal>c</literal>', and so forth.
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</para>
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<para>
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If <parameter>start</parameter> is negative, the returned string
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will start at the <parameter>start</parameter>'th character
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from the end of <parameter>string</parameter>.
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</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term><parameter>length</parameter></term>
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<listitem>
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<para>
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Maximum number of characters to use from <parameter>string</parameter>. If
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omitted or <literal>NULL</literal> is passed, extract all characters to
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the end of the string.
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</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term><parameter>encoding</parameter></term>
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<listitem>
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&mbstring.encoding.parameter;
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</listitem>
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</varlistentry>
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</variablelist>
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</para>
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</refsect1>
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<refsect1 role="returnvalues">
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&reftitle.returnvalues;
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<para>
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<function>mb_substr</function> returns the portion of
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<parameter>string</parameter> specified by the
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<parameter>start</parameter> and
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<parameter>length</parameter> parameters.
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</para>
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</refsect1>
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<refsect1 role="changelog">
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&reftitle.changelog;
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<informaltable>
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<tgroup cols="2">
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<thead>
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<row>
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<entry>&Version;</entry>
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<entry>&Description;</entry>
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</row>
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</thead>
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<tbody>
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&mbstring.changelog.encoding-nullable;
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</tbody>
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</tgroup>
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</informaltable>
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</refsect1>
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<refsect1 role="seealso">
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&reftitle.seealso;
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<para>
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<simplelist>
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<member><function>mb_strcut</function></member>
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<member><function>mb_internal_encoding</function></member>
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</simplelist>
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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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mode: sgml
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sgml-omittag:t
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sgml-shorttag:t
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sgml-minimize-attributes:nil
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sgml-always-quote-attributes:t
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sgml-indent-step:1
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sgml-indent-data:t
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indent-tabs-mode:nil
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sgml-parent-document:nil
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sgml-default-dtd-file:"~/.phpdoc/manual.ced"
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sgml-exposed-tags:nil
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sgml-local-catalogs:nil
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sgml-local-ecat-files:nil
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End:
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vim600: syn=xml fen fdm=syntax fdl=2 si
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vim: et tw=78 syn=sgml
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vi: ts=1 sw=1
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-->
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