📄 function.filter-var-array.html
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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>Gets multiple variables and optionally filters them</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.filter-list.html">filter_list</a></div> <div class="next" style="text-align: right; float: right;"><a href="function.filter-var.html">filter_var</a></div> <div class="up"><a href="ref.filter.html">Filter Functions</a></div> <div class="home"><a href="index.html">PHP Manual</a></div></div><hr /><div id="function.filter-var-array" class="refentry"> <div class="refnamediv"> <h1 class="refname">filter_var_array</h1> <p class="verinfo">(PHP 5 >= 5.2.0, PECL filter:0.11.0)</p><p class="refpurpose"><span class="refname">filter_var_array</span> — <span class="dc-title">Gets multiple variables and optionally filters them</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>filter_var_array</b></b></span> ( <span class="methodparam"><span class="type">array</span> <tt class="parameter">$data</tt></span> [, <span class="methodparam"><span class="type"><a href="language.pseudo-types.html#language.types.mixed" class="type mixed">mixed</a></span> <tt class="parameter">$definition</tt></span> ] )</div> <p class="para rdfs-comment"> This function is useful for retrieving many values without repetitively calling <a href="function.filter-var.html" class="function">filter_var()</a>. </p> </div> <div class="refsect1 parameters"> <h3 class="title">Parameters</h3> <p class="para"> <dl> <dt> <span class="term"><i><tt class="parameter">data</tt></i></span> <dd> <p class="para"> An array with string keys containing the data to filter. </p> </dd> </dt> <dt> <span class="term"><i><tt class="parameter">definition</tt></i></span> <dd> <p class="para"> An array defining the arguments. A valid key is a <a href="language.types.string.html" class="type string">string</a> containing a variable name and a valid value is either a filter type, or an <a href="language.types.array.html" class="type array">array</a> optionally specifying the filter, flags and options. If the value is an array, valid keys are <i>filter</i> which specifies the filter type, <i>flags</i> which specifies any flags that apply to the filter, and <i>options</i> which specifies any options that apply to the filter. See the example below for a better understanding. </p> <p class="para"> This parameter can be also an integer holding a <a href="filter.constants.html" class="link">filter constant</a>. Then all values in the input array are filtered by this filter. </p> </dd> </dt> </dl> </p> </div> <div class="refsect1 returnvalues"> <h3 class="title">Return Values</h3> <p class="para"> An array containing the values of the requested variables on success, or <b><tt>FALSE</tt></b> on failure. An array value will be <b><tt>FALSE</tt></b> if the filter fails, or <b><tt>NULL</tt></b> if the variable is not set. </p> </div> <div class="refsect1 examples"> <h3 class="title">Examples</h3> <p class="para"> <div class="example"> <p><b>Example #1 A <b>filter_var_array()</b> example</b></p> <div class="example-contents"><div class="phpcode"><code><span style="color: #000000"><span style="color: #0000BB"><?php<br />error_reporting</span><span style="color: #007700">(</span><span style="color: #0000BB">E_ALL </span><span style="color: #007700">| </span><span style="color: #0000BB">E_STRICT</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">$data </span><span style="color: #007700">= array(<br /> </span><span style="color: #DD0000">'product_id' </span><span style="color: #007700">=> </span><span style="color: #DD0000">'libgd<script>'</span><span style="color: #007700">,<br /> </span><span style="color: #DD0000">'component' </span><span style="color: #007700">=> </span><span style="color: #DD0000">'10'</span><span style="color: #007700">,<br /> </span><span style="color: #DD0000">'versions' </span><span style="color: #007700">=> </span><span style="color: #DD0000">'2.0.33'</span><span style="color: #007700">,<br /> </span><span style="color: #DD0000">'testscalar' </span><span style="color: #007700">=> array(</span><span style="color: #DD0000">'2'</span><span style="color: #007700">, </span><span style="color: #DD0000">'23'</span><span style="color: #007700">, </span><span style="color: #DD0000">'10'</span><span style="color: #007700">, </span><span style="color: #DD0000">'12'</span><span style="color: #007700">),<br /> </span><span style="color: #DD0000">'testarray' </span><span style="color: #007700">=> </span><span style="color: #DD0000">'2'</span><span style="color: #007700">,<br />);<br /><br /></span><span style="color: #0000BB">$args </span><span style="color: #007700">= array(<br /> </span><span style="color: #DD0000">'product_id' </span><span style="color: #007700">=> </span><span style="color: #0000BB">FILTER_SANITIZE_ENCODED</span><span style="color: #007700">,<br /> </span><span style="color: #DD0000">'component' </span><span style="color: #007700">=> array(</span><span style="color: #DD0000">'filter' </span><span style="color: #007700">=> </span><span style="color: #0000BB">FILTER_VALIDATE_INT</span><span style="color: #007700">,<br /> </span><span style="color: #DD0000">'flags' </span><span style="color: #007700">=> </span><span style="color: #0000BB">FILTER_FORCE_ARRAY</span><span style="color: #007700">, <br /> </span><span style="color: #DD0000">'options' </span><span style="color: #007700">=> array(</span><span style="color: #DD0000">'min_range' </span><span style="color: #007700">=> </span><span style="color: #0000BB">1</span><span style="color: #007700">, </span><span style="color: #DD0000">'max_range' </span><span style="color: #007700">=> </span><span style="color: #0000BB">10</span><span style="color: #007700">)<br /> ),<br /> </span><span style="color: #DD0000">'versions' </span><span style="color: #007700">=> </span><span style="color: #0000BB">FILTER_SANITIZE_ENCODED</span><span style="color: #007700">,<br /> </span><span style="color: #DD0000">'doesnotexist' </span><span style="color: #007700">=> </span><span style="color: #0000BB">FILTER_VALIDATE_INT</span><span style="color: #007700">,<br /> </span><span style="color: #DD0000">'testscalar' </span><span style="color: #007700">=> array(<br /> </span><span style="color: #DD0000">'filter' </span><span style="color: #007700">=> </span><span style="color: #0000BB">FILTER_VALIDATE_INT</span><span style="color: #007700">,<br /> </span><span style="color: #DD0000">'flags' </span><span style="color: #007700">=> </span><span style="color: #0000BB">FILTER_REQUIRE_SCALAR</span><span style="color: #007700">,<br /> ),<br /> </span><span style="color: #DD0000">'testarray' </span><span style="color: #007700">=> array(<br /> </span><span style="color: #DD0000">'filter' </span><span style="color: #007700">=> </span><span style="color: #0000BB">FILTER_VALIDATE_INT</span><span style="color: #007700">,<br /> </span><span style="color: #DD0000">'flags' </span><span style="color: #007700">=> </span><span style="color: #0000BB">FILTER_FORCE_ARRAY</span><span style="color: #007700">,<br /> )<br /><br />);<br /><br /></span><span style="color: #0000BB">$myinputs </span><span style="color: #007700">= </span><span style="color: #0000BB">filter_var_array</span><span style="color: #007700">(</span><span style="color: #0000BB">$data</span><span style="color: #007700">, </span><span style="color: #0000BB">$args</span><span style="color: #007700">);<br /><br /></span><span style="color: #0000BB">var_dump</span><span style="color: #007700">(</span><span style="color: #0000BB">$myinputs</span><span style="color: #007700">);<br />echo </span><span style="color: #DD0000">"\n"</span><span style="color: #007700">;<br /></span><span style="color: #0000BB">?></span></span></code></div> </div> <div class="example-contents"><p>The above example will output:</p></div> <div class="example-contents"><pre><div class="cdata"><pre>array(6) { ["product_id"]=> array(1) { [0]=> string(17) "libgd%3Cscript%3E" } ["component"]=> array(1) { [0]=> int(10) } ["versions"]=> array(1) { [0]=> string(6) "2.0.33" } ["doesnotexist"]=> NULL ["testscalar"]=> bool(false) ["testarray"]=> array(1) { [0]=> int(2) }}</pre></div> </pre></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.filter-input-array.html" class="function" rel="rdfs-seeAlso">filter_input_array()</a></li> <li class="member"><a href="function.filter-var.html" class="function" rel="rdfs-seeAlso">filter_var()</a></li> <li class="member"><a href="function.filter-input.html" class="function" rel="rdfs-seeAlso">filter_input()</a></li> </ul> </p> </div></div><hr /><div style="text-align: center;"> <div class="prev" style="text-align: left; float: left;"><a href="function.filter-list.html">filter_list</a></div> <div class="next" style="text-align: right; float: right;"><a href="function.filter-var.html">filter_var</a></div> <div class="up"><a href="ref.filter.html">Filter 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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