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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>Parses input from a string according to a format</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.sprintf.html">sprintf</a></div> <div class="next" style="text-align: right; float: right;"><a href="function.str-getcsv.html">str_getcsv</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.sscanf" class="refentry"> <div class="refnamediv"> <h1 class="refname">sscanf</h1> <p class="verinfo">(PHP 4 >= 4.0.1, PHP 5)</p><p class="refpurpose"><span class="refname">sscanf</span> — <span class="dc-title">Parses input from a string according to a format</span></p> </div> <div class="refsect1 description"> <h3 class="title">Description</h3> <div class="methodsynopsis dc-description"> <span class="type"><a href="language.pseudo-types.html#language.types.mixed" class="type mixed">mixed</a></span> <span class="methodname"><b><b>sscanf</b></b></span> ( <span class="methodparam"><span class="type">string</span> <tt class="parameter">$str</tt></span> , <span class="methodparam"><span class="type">string</span> <tt class="parameter">$format</tt></span> [, <span class="methodparam"><span class="type"><a href="language.pseudo-types.html#language.types.mixed" class="type mixed">mixed</a></span> <tt class="parameter reference">&$...</tt></span> ] )</div> <p class="para rdfs-comment"> The function <b>sscanf()</b> is the input analog of <a href="function.printf.html" class="function">printf()</a>. <b>sscanf()</b> reads from the string <i><tt class="parameter">str</tt></i> and interprets it according to the specified <i><tt class="parameter">format</tt></i>, which is described in the documentation for <a href="function.sprintf.html" class="function">sprintf()</a>. </p> <p class="para"> Any whitespace in the format string matches any whitespace in the input string. This means that even a tab \t in the format string can match a single space character in the input string. </p> </div> <div class="refsect1 parameters"> <h3 class="title">Parameters</h3> <p class="para"> <dl> <dt> <span class="term"><i><tt class="parameter">str</tt></i></span> <dd> <p class="para"> The input <a href="language.types.string.html" class="type string">string</a> being parsed. </p> </dd> </dt> <dt> <span class="term"><i><tt class="parameter">format</tt></i></span> <dd> <p class="para"> The interpreted format for <i><tt class="parameter">str</tt></i>, which is described in the documentation for <a href="function.sprintf.html" class="function">sprintf()</a>. </p> </dd> </dt> <dt> <span class="term"><i><tt class="parameter">...</tt></i></span> <dd> <p class="para"> Optionally pass in variables by reference that will contain the parsed values. </p> </dd> </dt> </dl> </p> </div> <div class="refsect1 returnvalues"> <h3 class="title">Return Values</h3> <p class="para"> If only two parameters were passed to this function, the values parsed will be returned as an array. Otherwise, if optional parameters are passed, the function will return the number of assigned values. The optional parameters must be passed by reference. </p> </div> <div class="refsect1 examples"> <h3 class="title">Examples</h3> <p class="para"> <div class="example"> <p><b>Example #1 <b>sscanf()</b> Example</b></p> <div class="example-contents"><div class="phpcode"><code><span style="color: #000000"><span style="color: #0000BB"><?php<br /></span><span style="color: #FF8000">// getting the serial number<br /></span><span style="color: #007700">list(</span><span style="color: #0000BB">$serial</span><span style="color: #007700">) = </span><span style="color: #0000BB">sscanf</span><span style="color: #007700">(</span><span style="color: #DD0000">"SN/2350001"</span><span style="color: #007700">, </span><span style="color: #DD0000">"SN/%d"</span><span style="color: #007700">);<br /></span><span style="color: #FF8000">// and the date of manufacturing<br /></span><span style="color: #0000BB">$mandate </span><span style="color: #007700">= </span><span style="color: #DD0000">"January 01 2000"</span><span style="color: #007700">;<br />list(</span><span style="color: #0000BB">$month</span><span style="color: #007700">, </span><span style="color: #0000BB">$day</span><span style="color: #007700">, </span><span style="color: #0000BB">$year</span><span style="color: #007700">) = </span><span style="color: #0000BB">sscanf</span><span style="color: #007700">(</span><span style="color: #0000BB">$mandate</span><span style="color: #007700">, </span><span style="color: #DD0000">"%s %d %d"</span><span style="color: #007700">);<br />echo </span><span style="color: #DD0000">"Item $serial was manufactured on: $year-" </span><span style="color: #007700">. </span><span style="color: #0000BB">substr</span><span style="color: #007700">(</span><span style="color: #0000BB">$month</span><span style="color: #007700">, </span><span style="color: #0000BB">0</span><span style="color: #007700">, </span><span style="color: #0000BB">3</span><span style="color: #007700">) . </span><span style="color: #DD0000">"-$day\n"</span><span style="color: #007700">;<br /></span><span style="color: #0000BB">?></span></span></code></div> </div> </div> </p> <p class="para"> If optional parameters are passed, the function will return the number of assigned values. </p> <p class="para"> <div class="example"> <p><b>Example #2 <b>sscanf()</b> - using optional parameters</b></p> <div class="example-contents"><div class="phpcode"><code><span style="color: #000000"><span style="color: #0000BB"><?php<br /></span><span style="color: #FF8000">// get author info and generate DocBook entry<br /></span><span style="color: #0000BB">$auth </span><span style="color: #007700">= </span><span style="color: #DD0000">"24\tLewis Carroll"</span><span style="color: #007700">;<br /></span><span style="color: #0000BB">$n </span><span style="color: #007700">= </span><span style="color: #0000BB">sscanf</span><span style="color: #007700">(</span><span style="color: #0000BB">$auth</span><span style="color: #007700">, </span><span style="color: #DD0000">"%d\t%s %s"</span><span style="color: #007700">, </span><span style="color: #0000BB">$id</span><span style="color: #007700">, </span><span style="color: #0000BB">$first</span><span style="color: #007700">, </span><span style="color: #0000BB">$last</span><span style="color: #007700">);<br />echo </span><span style="color: #DD0000">"<author id='$id'><br /> <firstname>$first</firstname><br /> <surname>$last</surname><br /></author>\n"</span><span style="color: #007700">;<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.fscanf.html" class="function" rel="rdfs-seeAlso">fscanf()</a></li> <li class="member"><a href="function.printf.html" class="function" rel="rdfs-seeAlso">printf()</a></li> <li class="member"><a href="function.sprintf.html" class="function" rel="rdfs-seeAlso">sprintf()</a></li> </ul> </p> </div></div><hr /><div style="text-align: center;"> <div class="prev" style="text-align: left; float: left;"><a href="function.sprintf.html">sprintf</a></div> <div class="next" style="text-align: right; float: right;"><a href="function.str-getcsv.html">str_getcsv</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>⌨️ 快捷键说明
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