📄 function.mysql-fetch-object.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>Fetch a result row as an object</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.mysql-fetch-lengths.html">mysql_fetch_lengths</a></div> <div class="next" style="text-align: right; float: right;"><a href="function.mysql-fetch-row.html">mysql_fetch_row</a></div> <div class="up"><a href="ref.mysql.html">MySQL Functions</a></div> <div class="home"><a href="index.html">PHP Manual</a></div></div><hr /><div id="function.mysql-fetch-object" class="refentry"> <div class="refnamediv"> <h1 class="refname">mysql_fetch_object</h1> <p class="verinfo">(PHP 4, PHP 5, PECL mysql:1.0)</p><p class="refpurpose"><span class="refname">mysql_fetch_object</span> — <span class="dc-title">Fetch a result row as an object</span></p> </div> <div class="refsect1 description"> <h3 class="title">Description</h3> <div class="methodsynopsis dc-description"> <span class="type">object</span> <span class="methodname"><b><b>mysql_fetch_object</b></b></span> ( <span class="methodparam"><span class="type">resource</span> <tt class="parameter">$result</tt></span> [, <span class="methodparam"><span class="type">string</span> <tt class="parameter">$class_name</tt></span> [, <span class="methodparam"><span class="type">array</span> <tt class="parameter">$params</tt></span> ]] )</div> <p class="para rdfs-comment"> Returns an object with properties that correspond to the fetched row and moves the internal data pointer ahead. </p> </div> <div class="refsect1 parameters"> <h3 class="title">Parameters</h3> <p class="para"> <dl> <dt><span class="term"><i><tt class="parameter">result</tt></i></span><dd><p class="para">The result <a href="language.types.resource.html" class="type resource">resource</a> thatis being evaluated. This result comes from a call to <a href="function.mysql-query.html" class="function">mysql_query()</a>.</p></dd></dt> <dt> <span class="term"><i><tt class="parameter">class_name</tt></i></span> <dd> <p class="para"> The name of the class to instantiate, set the properties of and return. If not specified, a <b class="classname">stdClass</b> object is returned. </p> </dd> </dt> <dt> <span class="term"><i><tt class="parameter">params</tt></i></span> <dd> <p class="para"> An optional <a href="language.types.array.html" class="type array">array</a> of parameters to pass to the constructor for <i><tt class="parameter">class_name</tt></i> objects. </p> </dd> </dt> </dl> </p> </div> <div class="refsect1 returnvalues"> <h3 class="title">Return Values</h3> <p class="para"> Returns an <a href="language.types.object.html" class="type object">object</a> with string properties that correspond to the fetched row, or <b><tt>FALSE</tt></b> if there are no more rows. </p> <p class="para"> <a href="function.mysql-fetch-row.html" class="function">mysql_fetch_row()</a> fetches one row of data from the result associated with the specified result identifier. The row is returned as an array. Each result column is stored in an array offset, starting at offset 0. </p> </div> <div class="refsect1 changelog"> <h3 class="title">ChangeLog</h3> <p class="para"> <table class="informaltable"> <colgroup> <thead valign="middle"> <tr valign="middle"> <th colspan="1">Version</th> <th colspan="1">Description</th> </tr> </thead> <tbody valign="middle" class="tbody"> <tr valign="middle"> <td colspan="1" rowspan="1" align="left">5.0.0</td> <td colspan="1" rowspan="1" align="left"> Added the ability to return as a different object. </td> </tr> </tbody> </colgroup> </table> </p> </div> <div class="refsect1 examples"> <h3 class="title">Examples</h3> <p class="para"> <div class="example"> <p><b>Example #1 <b>mysql_fetch_object()</b> example</b></p> <div class="example-contents"><div class="phpcode"><code><span style="color: #000000"><span style="color: #0000BB"><?php<br />mysql_connect</span><span style="color: #007700">(</span><span style="color: #DD0000">"hostname"</span><span style="color: #007700">, </span><span style="color: #DD0000">"user"</span><span style="color: #007700">, </span><span style="color: #DD0000">"password"</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">mysql_select_db</span><span style="color: #007700">(</span><span style="color: #DD0000">"mydb"</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">$result </span><span style="color: #007700">= </span><span style="color: #0000BB">mysql_query</span><span style="color: #007700">(</span><span style="color: #DD0000">"select * from mytable"</span><span style="color: #007700">);<br />while (</span><span style="color: #0000BB">$row </span><span style="color: #007700">= </span><span style="color: #0000BB">mysql_fetch_object</span><span style="color: #007700">(</span><span style="color: #0000BB">$result</span><span style="color: #007700">)) {<br /> echo </span><span style="color: #0000BB">$row</span><span style="color: #007700">-></span><span style="color: #0000BB">user_id</span><span style="color: #007700">;<br /> echo </span><span style="color: #0000BB">$row</span><span style="color: #007700">-></span><span style="color: #0000BB">fullname</span><span style="color: #007700">;<br />}<br /></span><span style="color: #0000BB">mysql_free_result</span><span style="color: #007700">(</span><span style="color: #0000BB">$result</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">?></span></span></code></div> </div> </div> </p> <p class="para"> <div class="example"> <p><b>Example #2 <b>mysql_fetch_object()</b> example</b></p> <div class="example-contents"><div class="phpcode"><code><span style="color: #000000"><span style="color: #0000BB"><?php<br /></span><span style="color: #007700">class </span><span style="color: #0000BB">foo </span><span style="color: #007700">{<br /> public </span><span style="color: #0000BB">$name</span><span style="color: #007700">;<br />}<br /><br /></span><span style="color: #0000BB">mysql_connect</span><span style="color: #007700">(</span><span style="color: #DD0000">"hostname"</span><span style="color: #007700">, </span><span style="color: #DD0000">"user"</span><span style="color: #007700">, </span><span style="color: #DD0000">"password"</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">mysql_select_db</span><span style="color: #007700">(</span><span style="color: #DD0000">"mydb"</span><span style="color: #007700">);<br /><br /></span><span style="color: #0000BB">$result </span><span style="color: #007700">= </span><span style="color: #0000BB">mysql_query</span><span style="color: #007700">(</span><span style="color: #DD0000">"select name from mytable limit 1"</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">$obj </span><span style="color: #007700">= </span><span style="color: #0000BB">mysql_fetch_object</span><span style="color: #007700">(</span><span style="color: #0000BB">$result</span><span style="color: #007700">, </span><span style="color: #DD0000">'foo'</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">var_dump</span><span style="color: #007700">(</span><span style="color: #0000BB">$obj</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">?></span></span></code></div> </div> </div> </p> </div> <div class="refsect1 notes"> <h3 class="title">Notes</h3> <blockquote><p><b class="note">Note</b>: <b>Performance</b><br /> Speed-wise, the function is identical to <a href="function.mysql-fetch-array.html" class="function">mysql_fetch_array()</a>, and almost as quick as <a href="function.mysql-fetch-row.html" class="function">mysql_fetch_row()</a> (the difference is insignificant). <br /> </p></blockquote> <blockquote><p><b class="note">Note</b>: <b>mysql_fetch_object()</b> is similar to <a href="function.mysql-fetch-array.html" class="function">mysql_fetch_array()</a>, with one difference - an object is returned, instead of an array. Indirectly, that means that you can only access the data by the field names, and not by their offsets (numbers are illegal property names). <br /> </p></blockquote> <blockquote><p><b class="note">Note</b>: <span class="simpara">Field names returned by this functionare <em class="emphasis">case-sensitive</em>.</span></p></blockquote> <blockquote><p><b class="note">Note</b>: <span class="simpara">This function sets NULL fields tothe PHP <b><tt>NULL</tt></b> value.</span></p></blockquote> </div> <div class="refsect1 seealso"> <h3 class="title">See Also</h3> <p class="para"> <ul class="simplelist"> <li class="member"><a href="function.mysql-fetch-array.html" class="function" rel="rdfs-seeAlso">mysql_fetch_array()</a></li> <li class="member"><a href="function.mysql-fetch-assoc.html" class="function" rel="rdfs-seeAlso">mysql_fetch_assoc()</a></li> <li class="member"><a href="function.mysql-fetch-row.html" class="function" rel="rdfs-seeAlso">mysql_fetch_row()</a></li> <li class="member"><a href="function.mysql-data-seek.html" class="function" rel="rdfs-seeAlso">mysql_data_seek()</a></li> <li class="member"><a href="function.mysql-query.html" class="function" rel="rdfs-seeAlso">mysql_query()</a></li> </ul> </p> </div></div><hr /><div style="text-align: center;"> <div class="prev" style="text-align: left; float: left;"><a href="function.mysql-fetch-lengths.html">mysql_fetch_lengths</a></div> <div class="next" style="text-align: right; float: right;"><a href="function.mysql-fetch-row.html">mysql_fetch_row</a></div> <div class="up"><a href="ref.mysql.html">MySQL 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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