function.variant-cmp.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>Compares two variants</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.variant-cat.html">variant_cat</a></div> <div class="next" style="text-align: right; float: right;"><a href="function.variant-date-from-timestamp.html">variant_date_from_timestamp</a></div> <div class="up"><a href="ref.com.html">COM Functions</a></div> <div class="home"><a href="index.html">PHP Manual</a></div></div><hr /><div id="function.variant-cmp" class="refentry"> <div class="refnamediv"> <h1 class="refname">variant_cmp</h1> <p class="verinfo">(PHP 5)</p><p class="refpurpose"><span class="refname">variant_cmp</span> — <span class="dc-title">Compares two variants</span></p> </div> <div class="refsect1 description"> <h3 class="title">Description</h3> <div class="methodsynopsis dc-description"> <span class="type">int</span> <span class="methodname"><b><b>variant_cmp</b></b></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">$left</tt></span> , <span class="methodparam"><span class="type"><a href="language.pseudo-types.html#language.types.mixed" class="type mixed">mixed</a></span> <tt class="parameter">$right</tt></span> [, <span class="methodparam"><span class="type">int</span> <tt class="parameter">$lcid</tt></span> [, <span class="methodparam"><span class="type">int</span> <tt class="parameter">$flags</tt></span> ]] )</div> <p class="para rdfs-comment"> Compares <i><tt class="parameter">left</tt></i> with <i><tt class="parameter">right</tt></i>. </p> <p class="para"> This function will only compare scalar values, not arrays or variant records. </p> </div> <div class="refsect1 parameters"> <h3 class="title">Parameters</h3> <p class="para"> <dl> <dt> <span class="term"><i><tt class="parameter">left</tt></i></span> <dd> <p class="para"> The left operand. </p> </dd> </dt> <dt> <span class="term"><i><tt class="parameter">right</tt></i></span> <dd> <p class="para"> The right operand. </p> </dd> </dt> <dt> <span class="term"><i><tt class="parameter">lcid</tt></i></span> <dd> <p class="para"> A valid Locale Identifier to use when comparing strings (this affects string collation). </p> </dd> </dt> <dt> <span class="term"><i><tt class="parameter">flags</tt></i></span> <dd> <p class="para"> <i><tt class="parameter">flags</tt></i> can be one or more of the following values OR'd together, and affects string comparisons: <table border="5"> <caption><b>Variant Comparision Flags</b></caption> <colgroup> <thead valign="middle"> <tr valign="middle"> <th colspan="1">value</th> <th colspan="1">meaning</th> </tr> </thead> <tbody valign="middle" class="tbody"> <tr valign="middle"> <td colspan="1" rowspan="1" align="left"><b><tt>NORM_IGNORECASE</tt></b></td> <td colspan="1" rowspan="1" align="left">Compare case insensitively</td> </tr> <tr valign="middle"> <td colspan="1" rowspan="1" align="left"><b><tt>NORM_IGNORENONSPACE</tt></b></td> <td colspan="1" rowspan="1" align="left">Ignore nonspacing characters</td> </tr> <tr valign="middle"> <td colspan="1" rowspan="1" align="left"><b><tt>NORM_IGNORESYMBOLS</tt></b></td> <td colspan="1" rowspan="1" align="left">Ignore symbols</td> </tr> <tr valign="middle"> <td colspan="1" rowspan="1" align="left"><b><tt>NORM_IGNOREWIDTH</tt></b></td> <td colspan="1" rowspan="1" align="left">Ignore string width</td> </tr> <tr valign="middle"> <td colspan="1" rowspan="1" align="left"><b><tt>NORM_IGNOREKANATYPE</tt></b></td> <td colspan="1" rowspan="1" align="left">Ignore Kana type</td> </tr> <tr valign="middle"> <td colspan="1" rowspan="1" align="left"><b><tt>NORM_IGNOREKASHIDA</tt></b></td> <td colspan="1" rowspan="1" align="left">Ignore Arabic kashida characters</td> </tr> </tbody> </colgroup> </table> </p> </dd> </dt> </dl> </p> <blockquote><p><b class="note">Note</b>: As with all the variant arithmetic functions, the parameters for this function can be either a PHP native type (integer, string, floating point, boolean or <b><tt>NULL</tt></b>), or an instance of a COM, VARIANT or DOTNET class. PHP native types will be converted to variants using the same rules as found in the constructor for the <a href="class.variant.html" class="xref">VARIANT</a> class. COM and DOTNET objects will have the value of their default property taken and used as the variant value.<br /> The variant arithmetic functions are wrappers around the similarly named functions in the COM library; for more information on these functions, consult the MSDN library. The PHP functions are named slightly differently; for example <a href="function.variant-add.html" class="function">variant_add()</a> in PHP corresponds to <i>VarAdd() </i> in the MSDN documentation.<br /></p></blockquote> </div> <div class="refsect1 returnvalues"> <h3 class="title">Return Values</h3> <p class="para"> Returns one of the following: <table border="5"> <caption><b>Variant Comparision Results</b></caption> <colgroup> <thead valign="middle"> <tr valign="middle"> <th colspan="1">value</th> <th colspan="1">meaning</th> </tr> </thead> <tbody valign="middle" class="tbody"> <tr valign="middle"> <td colspan="1" rowspan="1" align="left"><b><tt>VARCMP_LT</tt></b></td> <td colspan="1" rowspan="1" align="left"><i><tt class="parameter">left</tt></i> is less than <i><tt class="parameter">right</tt></i> </td> </tr> <tr valign="middle"> <td colspan="1" rowspan="1" align="left"><b><tt>VARCMP_EQ</tt></b></td> <td colspan="1" rowspan="1" align="left"><i><tt class="parameter">left</tt></i> is equal to <i><tt class="parameter">right</tt></i> </td> </tr> <tr valign="middle"> <td colspan="1" rowspan="1" align="left"><b><tt>VARCMP_GT</tt></b></td> <td colspan="1" rowspan="1" align="left"><i><tt class="parameter">left</tt></i> is greater than <i><tt class="parameter">right</tt></i> </td> </tr> <tr valign="middle"> <td colspan="1" rowspan="1" align="left"><b><tt>VARCMP_NULL</tt></b></td> <td colspan="1" rowspan="1" align="left">Either <i><tt class="parameter">left</tt></i>, <i><tt class="parameter">right</tt></i> or both are <b><tt>NULL</tt></b> </td> </tr> </tbody> </colgroup> </table> </p> </div></div><hr /><div style="text-align: center;"> <div class="prev" style="text-align: left; float: left;"><a href="function.variant-cat.html">variant_cat</a></div> <div class="next" style="text-align: right; float: right;"><a href="function.variant-date-from-timestamp.html">variant_date_from_timestamp</a></div> <div class="up"><a href="ref.com.html">COM 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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