php-doc-en/reference/math/functions/min.xml
Jakub Vrana 8214cac81b Fix protos from sources
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2004-08-18 14:15:21 +00:00

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<?xml version="1.0" encoding="iso-8859-1"?>
<!-- $Revision: 1.5 $ -->
<!-- splitted from ./en/functions/math.xml, last change in rev 1.2 -->
<refentry id="function.min">
<refnamediv>
<refname>min</refname>
<refpurpose>Find lowest value</refpurpose>
</refnamediv>
<refsect1>
<title>Description</title>
<methodsynopsis>
<type>mixed</type><methodname>min</methodname>
<methodparam><type>number</type><parameter>arg1</parameter></methodparam>
<methodparam><type>number</type><parameter>arg2</parameter></methodparam>
<methodparam choice="opt"><type>number</type><parameter>...</parameter></methodparam>
</methodsynopsis>
<methodsynopsis>
<type>mixed</type><methodname>min</methodname>
<methodparam><type>array</type><parameter>numbers</parameter></methodparam>
</methodsynopsis>
<para>
<function>min</function> returns the numerically lowest of the
parameter values.
</para>
<para>
If the first and only parameter is an array, <function>min</function>
returns the lowest value in that array. If the first parameter
is an integer, string or float, you need at least two parameters
and <function>min</function> returns the smallest of these values.
You can compare an unlimited number of values.
</para>
<note>
<para>
PHP will evaluate a non-numeric <type>string</type> as
<literal>0</literal>, but still return the string if it's seen as the
numerically lowest value. If multiple arguments evaluate to
<literal>0</literal>, <function>min</function> will use the first one
it sees (the leftmost value).
</para>
</note>
<para>
<example>
<title>Example uses of <function>min</function></title>
<programlisting role="php">
<![CDATA[
<?php
echo min(2, 3, 1, 6, 7); // 1
echo min(array(2, 4, 5)); // 2
echo min(0, 'hello'); // 0
echo min('hello', 0); // hello
echo min('hello', -1); // -1
// With multiple arrays, min compares from left to right
// so in our example: 2 == 2, but 4 < 5
$val = min(array(2, 4, 8), array(2, 5, 1)); // array(2, 4, 8)
// If both an array and non-array are given, the array
// is never returned as it's considered the largest
$val = min('string', array(2, 5, 7), 42); // string
?>
]]>
</programlisting>
</example>
</para>
<para>
See also <function>max</function> and
<function>count</function>.
</para>
</refsect1>
</refentry>
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