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<?xml version="1.0" encoding="utf-8"?>
<!-- $Revision: 328448 $ -->
<refentry xml:id="function.range" xmlns="http://docbook.org/ns/docbook">
<refnamediv>
<refname>range</refname>
<refpurpose>Create an array containing a range of elements</refpurpose>
</refnamediv>
<refsect1 role="description">
&reftitle.description;
<methodsynopsis>
<type>array</type><methodname>range</methodname>
<methodparam><type>mixed</type><parameter>start</parameter></methodparam>
<methodparam><type>mixed</type><parameter>end</parameter></methodparam>
<methodparam choice="opt"><type>number</type><parameter>step</parameter><initializer>1</initializer></methodparam>
</methodsynopsis>
<para>
Create an array containing a range of elements.
</para>
</refsect1>
<refsect1 role="parameters">
&reftitle.parameters;
<para>
<variablelist>
<varlistentry>
<term><parameter>start</parameter></term>
<listitem>
<para>
First value of the sequence.
</para>
</listitem>
</varlistentry>
<varlistentry>
<term><parameter>end</parameter></term>
<listitem>
<para>
The sequence is ended upon reaching the
<parameter>end</parameter> value.
</para>
</listitem>
</varlistentry>
<varlistentry>
<term><parameter>step</parameter></term>
<listitem>
<para>
If a <parameter>step</parameter> value is given, it will be used as the
increment between elements in the sequence. <parameter>step</parameter>
should be given as a positive number. If not specified,
<parameter>step</parameter> will default to 1.
</para>
</listitem>
</varlistentry>
</variablelist>
</para>
</refsect1>
<refsect1 role="returnvalues">
&reftitle.returnvalues;
<para>
Returns an array of elements from <parameter>start</parameter> to
<parameter>end</parameter>, inclusive.
</para>
</refsect1>
<refsect1 role="changelog">
&reftitle.changelog;
<para>
<informaltable>
<tgroup cols="2">
<thead>
<row>
<entry>&Version;</entry>
<entry>&Description;</entry>
</row>
</thead>
<tbody>
<row>
<entry>5.0.0</entry>
<entry>
The optional <parameter>step</parameter> parameter was added.
</entry>
</row>
<row>
<entry>4.1.0 to 4.3.2</entry>
<entry>
In PHP versions 4.1.0 through 4.3.2, <function>range</function> sees
numeric strings as strings and not integers. Instead, they will be
used for character sequences. For example, <literal>"4242"</literal>
is treated as <literal>"4"</literal>.
</entry>
</row>
<row>
<entry>4.1.0</entry>
<entry>
Prior to PHP 4.1.0, <function>range</function> only generated
incrementing integer arrays. Support for character sequences and
decrementing arrays was added in 4.1.0. Character sequence values
are limited to a length of one. If a length greater than one is
entered, only the first character is used.
</entry>
</row>
</tbody>
</tgroup>
</informaltable>
</para>
</refsect1>
<refsect1 role="examples">
&reftitle.examples;
<para>
<example>
<title><function>range</function> examples</title>
<programlisting role="php">
<![CDATA[
<?php
// array(0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
foreach (range(0, 12) as $number) {
echo $number;
}
// The step parameter was introduced in 5.0.0
// array(0, 10, 20, 30, 40, 50, 60, 70, 80, 90, 100)
foreach (range(0, 100, 10) as $number) {
echo $number;
}
// Use of character sequences introduced in 4.1.0
// array('a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i');
foreach (range('a', 'i') as $letter) {
echo $letter;
}
// array('c', 'b', 'a');
foreach (range('c', 'a') as $letter) {
echo $letter;
}
?>
]]>
</programlisting>
</example>
</para>
</refsect1>
<refsect1 role="seealso">
&reftitle.seealso;
<para>
<simplelist>
<member><function>shuffle</function></member>
<member><function>array_fill</function></member>
<member>&foreach;</member>
</simplelist>
</para>
</refsect1>
</refentry>
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