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number_format is more like a string function...

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git-svn-id: https://svn.php.net/repository/phpdoc/en/trunk@97282 c90b9560-bf6c-de11-be94-00142212c4b1
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Hartmut Holzgraefe 2002-09-28 20:56:46 +00:00
parent 7217a0d33d
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reference/strings/functions/number-format.xml Normal file
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<?xml version="1.0" encoding="iso-8859-1"?>
<!-- $Revision: 1.1 $ -->
<!-- splitted from ./en/functions/math.xml, last change in rev 1.2 -->
<refentry id="function.number-format">
<refnamediv>
<refname>number_format</refname>
<refpurpose>Format a number with grouped thousands</refpurpose>
</refnamediv>
<refsect1>
<title>Description</title>
<methodsynopsis>
<type>string</type><methodname>number_format</methodname>
<methodparam><type>float</type><parameter>number</parameter></methodparam>
<methodparam choice="opt"><type>int</type><parameter>decimals</parameter></methodparam>
<methodparam choice="opt"><type>string</type><parameter>dec_point</parameter></methodparam>
<methodparam choice="opt"><type>string</type><parameter>thousands_sep</parameter></methodparam>
</methodsynopsis>
<para>
<function>number_format</function> returns a formatted version of
<parameter>number</parameter>. This function accepts either one,
two or four parameters (not three):
</para>
<para>If only one parameter is given,
<parameter>number</parameter> will be formatted without decimals,
but with a comma (",") between every group of thousands.
</para>
<para>
If two parameters are given, <parameter>number</parameter> will
be formatted with <parameter>decimals</parameter> decimals with a
dot (".") in front, and a comma (",") between every group of
thousands.
</para>
<para>
If all four parameters are given, <parameter>number</parameter>
will be formatted with <parameter>decimals</parameter> decimals,
<parameter>dec_point</parameter> instead of a dot (".") before
the decimals and <parameter>thousands_sep</parameter> instead of
a comma (",") between every group of thousands.
</para>
<note>
<para>
Only the first character of <parameter>thousands_sep</parameter>
is used. For example, if you use <literal>foo</literal> as
<parameter>thousands_sep</parameter> on the number
<literal>1000</literal>, <function>number_format</function> will
return <literal>1f000</literal>.
</para>
</note>
<para>
<example>
<title><function>number_format</function> Example</title>
<para>
For instance, French notation usually use two decimals,
comma (',') as decimal separator, and space (' ') as
thousand separator. This is achieved with this line :
</para>
<programlisting role="php">
<![CDATA[
<?php
$number = 1234.56;
// english notation (default)
$english_format_number = number_format($number);
// 1,234.56
// French notation
$nombre_format_francais = number_format($number, 2, ',', ' ');
// 1 234,56
$number = 1234.5678;
// english notation without thousands seperator
$english_format_number = number_format($number, 2, '.', '');
// 1234.57
?>
]]>
</programlisting>
</example>
</para>
<para>
See also: <function>sprintf</function>,
<function>printf</function> and <function>sscanf</function>.
</para>
</refsect1>
</refentry>
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