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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"><html> <head> <title>Format a number with grouped thousands</title> <meta http-equiv="content-type" content="text/html; charset=UTF-8"> </head> <body><div style="text-align: center;"> <div class="prev" style="text-align: left; float: left;"><a href="function.nl2br.html">nl2br</a></div> <div class="next" style="text-align: right; float: right;"><a href="function.ord.html">ord</a></div> <div class="up"><a href="ref.strings.html">String Functions</a></div> <div class="home"><a href="index.html">PHP Manual</a></div></div><hr /><div id="function.number-format" class="refentry"> <div class="refnamediv"> <h1 class="refname">number_format</h1> <p class="verinfo">(PHP 4, PHP 5)</p><p class="refpurpose"><span class="refname">number_format</span> — <span class="dc-title">Format a number with grouped thousands</span></p> </div> <div class="refsect1 description"> <h3 class="title">Description</h3> <div class="methodsynopsis dc-description"> <span class="type">string</span> <span class="methodname"><b><b>number_format</b></b></span> ( <span class="methodparam"><span class="type">float</span> <tt class="parameter">$number</tt></span> [, <span class="methodparam"><span class="type">int</span> <tt class="parameter">$decimals</tt></span> ] )</div> <div class="methodsynopsis dc-description"> <span class="type">string</span> <span class="methodname"><b><b>number_format</b></b></span> ( <span class="methodparam"><span class="type">float</span> <tt class="parameter">$number</tt></span> , <span class="methodparam"><span class="type">int</span> <tt class="parameter">$decimals</tt></span> , <span class="methodparam"><span class="type">string</span> <tt class="parameter">$dec_point</tt></span> , <span class="methodparam"><span class="type">string</span> <tt class="parameter">$thousands_sep</tt></span> )</div> <p class="para rdfs-comment"> This function accepts either one, two, or four parameters (not three): </p> <p class="para"> If only one parameter is given, <i><tt class="parameter">number</tt></i> will be formatted without decimals, but with a comma (",") between every group of thousands. </p> <p class="para"> If two parameters are given, <i><tt class="parameter">number</tt></i> will be formatted with <i><tt class="parameter">decimals</tt></i> decimals with a dot (".") in front, and a comma (",") between every group of thousands. </p> <p class="para"> If all four parameters are given, <i><tt class="parameter">number</tt></i> will be formatted with <i><tt class="parameter">decimals</tt></i> decimals, <i><tt class="parameter">dec_point</tt></i> instead of a dot (".") before the decimals and <i><tt class="parameter">thousands_sep</tt></i> instead of a comma (",") between every group of thousands. </p> </div> <div class="refsect1 returnvalues"> <h3 class="title">Return Values</h3> <p class="para"> A formatted version of <i><tt class="parameter">number</tt></i>. </p> </div> <div class="refsect1 parameters"> <h3 class="title">Parameters</h3> <p class="para"> <dl> <dt> <span class="term"><i><tt class="parameter">number</tt></i></span> <dd> <p class="para"> The number being formatted. </p> </dd> </dt> <dt> <span class="term"><i><tt class="parameter">decimals</tt></i></span> <dd> <p class="para"> Sets the number of decimal points. </p> </dd> </dt> <dt> <span class="term"><i><tt class="parameter">dec_point</tt></i></span> <dd> <p class="para"> Sets the separator for the decimal point. </p> </dd> </dt> <dt> <span class="term"><i><tt class="parameter">thousands_sep</tt></i></span> <dd> <p class="para"> Sets the thousands separator. </p> <p class="para"> Only the first character of <i><tt class="parameter">thousands_sep</tt></i> is used. For example, if you use <i>bar</i> as <i><tt class="parameter">thousands_sep</tt></i> on the number <i>1000</i>, <b>number_format()</b> will return <i>1b000</i>. </p> </dd> </dt> </dl> </p> </div> <div class="refsect1 examples"> <h3 class="title">Examples</h3> <p class="para"> <div class="example"> <p><b>Example #1 <b>number_format()</b> Example</b></p> <div class="example-contents"><p> For instance, French notation usually use two decimals, comma (',') as decimal separator, and space (' ') as thousand separator. This is achieved with this line : </p></div> <div class="example-contents"><div class="phpcode"><code><span style="color: #000000"><span style="color: #0000BB"><?php<br /><br />$number </span><span style="color: #007700">= </span><span style="color: #0000BB">1234.56</span><span style="color: #007700">;<br /><br /></span><span style="color: #FF8000">// english notation (default)<br /></span><span style="color: #0000BB">$english_format_number </span><span style="color: #007700">= </span><span style="color: #0000BB">number_format</span><span style="color: #007700">(</span><span style="color: #0000BB">$number</span><span style="color: #007700">);<br /></span><span style="color: #FF8000">// 1,235<br /><br />// French notation<br /></span><span style="color: #0000BB">$nombre_format_francais </span><span style="color: #007700">= </span><span style="color: #0000BB">number_format</span><span style="color: #007700">(</span><span style="color: #0000BB">$number</span><span style="color: #007700">, </span><span style="color: #0000BB">2</span><span style="color: #007700">, </span><span style="color: #DD0000">','</span><span style="color: #007700">, </span><span style="color: #DD0000">' '</span><span style="color: #007700">);<br /></span><span style="color: #FF8000">// 1 234,56<br /><br /></span><span style="color: #0000BB">$number </span><span style="color: #007700">= </span><span style="color: #0000BB">1234.5678</span><span style="color: #007700">;<br /><br /></span><span style="color: #FF8000">// english notation without thousands seperator<br /></span><span style="color: #0000BB">$english_format_number </span><span style="color: #007700">= </span><span style="color: #0000BB">number_format</span><span style="color: #007700">(</span><span style="color: #0000BB">$number</span><span style="color: #007700">, </span><span style="color: #0000BB">2</span><span style="color: #007700">, </span><span style="color: #DD0000">'.'</span><span style="color: #007700">, </span><span style="color: #DD0000">''</span><span style="color: #007700">);<br /></span><span style="color: #FF8000">// 1234.57<br /><br /></span><span style="color: #0000BB">?></span></span></code></div> </div> </div> </p> </div> <div class="refsect1 seealso"> <h3 class="title">See Also</h3> <p class="para"> <ul class="simplelist"> <li class="member"><a href="function.money-format.html" class="function" rel="rdfs-seeAlso">money_format()</a></li> <li class="member"><a href="function.sprintf.html" class="function" rel="rdfs-seeAlso">sprintf()</a></li> <li class="member"><a href="function.printf.html" class="function" rel="rdfs-seeAlso">printf()</a></li> <li class="member"><a href="function.sscanf.html" class="function" rel="rdfs-seeAlso">sscanf()</a></li> </ul> </p> </div></div><hr /><div style="text-align: center;"> <div class="prev" style="text-align: left; float: left;"><a href="function.nl2br.html">nl2br</a></div> <div class="next" style="text-align: right; float: right;"><a href="function.ord.html">ord</a></div> <div class="up"><a href="ref.strings.html">String Functions</a></div> <div class="home"><a href="index.html">PHP Manual</a></div></div></body></html>?? 快捷鍵說明
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