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  <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><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>
    <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>
    <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

// 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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