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<?xml version="1.0" encoding="iso-8859-1"?>
<!-- $Revision: 1.3 $ -->
<refentry id="function.str-split">
<refnamediv>
<refname>str_split</refname>
<refpurpose>
Convert a string to an array
</refpurpose>
</refnamediv>
<refsect1>
<title>Description</title>
<methodsynopsis>
<type>array</type><methodname>str_split</methodname>
<methodparam><type>string</type><parameter>string</parameter></methodparam>
<methodparam choice="opt"><type>int</type><parameter>split_length</parameter></methodparam>
</methodsynopsis>
<para>
Converts a string to an array. If the optional
<parameter>split_length</parameter> parameter is specified, the
returned array will be broken down into chunks with each being
<parameter>split_length</parameter> in length, otherwise each chunk
will be one character in length.
</para>
<para>
&false; is returned if <parameter>split_length</parameter> is less
than 1. If the <parameter>split_length</parameter> length exceeds the
length of <parameter>string</parameter>, the entire string is returned
as the first (and only) array element.
</para>
<para>
<example>
<title>Example uses of <function>str_split</function></title>
<programlisting role="php">
<![CDATA[
<?php
$str = "Hello Friend";
$arr1 = str_split($str);
$arr2 = str_split($str, 3);
print_r($arr1);
print_r($arr2);
?>
]]>
</programlisting>
<para>
Output may look like:
</para>
<screen>
<![CDATA[
Array
(
[0] => H
[1] => e
[2] => l
[3] => l
[4] => o
[5] =>
[6] => F
[7] => r
[8] => i
[9] => e
[10] => n
[11] => d
)
Array
(
[0] => Hel
[1] => lo
[2] => Fri
[3] => end
)
]]>
</screen>
</example>
</para>
<para>
<example>
<title>Examples related to <function>str_split</function></title>
<programlisting role="php">
<![CDATA[
<?php
$str = "Hello Friend";
echo $str{0}; // H
echo $str{8}; // i
// Creates: array('H','e','l','l','o',' ','F','r','i','e','n','d')
$arr1 = preg_split('//', $str, -1, PREG_SPLIT_NO_EMPTY);
?>
]]>
</programlisting>
</example>
</para>
<para>
See also <function>chunk_split</function>,
<function>preg_split</function>,
<function>split</function>,
<function>count_chars</function>,
<function>str_word_count</function>, and
<link linkend="control-structures.for">for</link>.
</para>
</refsect1>
</refentry>
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