<?php include_once $_SERVER['DOCUMENT_ROOT'] . '/include/shared-manual.inc'; $TOC = array(); $TOC_DEPRECATED = array(); $PARENTS = array(); include_once dirname(__FILE__) ."/toc/class.mysqli.inc"; $setup = array ( 'home' => array ( 0 => 'index.php', 1 => 'PHP Manual', ), 'head' => array ( 0 => 'UTF-8', 1 => 'zh', ), 'this' => array ( 0 => 'mysqli.connect-errno.php', 1 => 'mysqli::$connect_errno', 2 => 'Returns the error code from last connect call', ), 'up' => array ( 0 => 'class.mysqli.php', 1 => 'mysqli', ), 'prev' => array ( 0 => 'mysqli.commit.php', 1 => 'mysqli::commit', ), 'next' => array ( 0 => 'mysqli.connect-error.php', 1 => 'mysqli::$connect_error', ), 'alternatives' => array ( ), 'source' => array ( 'lang' => 'en', 'path' => 'reference/mysqli/mysqli/connect-errno.xml', ), 'history' => array ( ), ); $setup["toc"] = $TOC; $setup["toc_deprecated"] = $TOC_DEPRECATED; $setup["parents"] = $PARENTS; manual_setup($setup); contributors($setup); ?> <div id="mysqli.connect-errno" class="refentry"> <div class="refnamediv"> <h1 class="refname">mysqli::$connect_errno</h1> <h1 class="refname">mysqli_connect_errno</h1> <p class="verinfo">(PHP 5, PHP 7, PHP 8)</p><p class="refpurpose"><span class="refname">mysqli::$connect_errno</span> -- <span class="refname">mysqli_connect_errno</span> — <span class="dc-title">Returns the error code from last connect call</span></p> </div> <div class="refsect1 description" id="refsect1-mysqli.connect-errno-description"> <h3 class="title">说明</h3> <p class="para">面向对象风格</p> <div class="fieldsynopsis"><span class="type"><a href="language.types.integer.php" class="type int">int</a></span> <var class="varname"><a href="mysqli.connect-errno.php">$mysqli->connect_errno</a></var>;</div> <p class="para">过程化风格</p> <div class="methodsynopsis dc-description"> <span class="methodname"><strong>mysqli_connect_errno</strong></span>(): <span class="type"><a href="language.types.integer.php" class="type int">int</a></span></div> <p class="para rdfs-comment"> Returns the error code from the last connection attempt. </p> </div> <div class="refsect1 parameters" id="refsect1-mysqli.connect-errno-parameters"> <h3 class="title">参数</h3> <p class="para">此函数没有参数。</p> </div> <div class="refsect1 returnvalues" id="refsect1-mysqli.connect-errno-returnvalues"> <h3 class="title">返回值</h3> <p class="para"> An error code for the last connection attempt, if it failed. Zero means no error occurred. </p> <p class="para"> Returns the last connection error code regardless of the instance on which it is called. </p> </div> <div class="refsect1 examples" id="refsect1-mysqli.connect-errno-examples"> <h3 class="title">示例</h3> <div class="example" id="example-1557"> <p><strong>示例 #1 <var class="varname">$mysqli->connect_errno</var> example</strong></p> <div class="example-contents"><p>面向对象风格</p></div> <div class="example-contents"> <div class="phpcode"><code><span style="color: #000000"><span style="color: #0000BB"><?php<br /><br />mysqli_report</span><span style="color: #007700">(</span><span style="color: #0000BB">MYSQLI_REPORT_OFF</span><span style="color: #007700">);<br /></span><span style="color: #FF8000">/* @ is used to suppress warnings */<br /></span><span style="color: #0000BB">$mysqli </span><span style="color: #007700">= @new </span><span style="color: #0000BB">mysqli</span><span style="color: #007700">(</span><span style="color: #DD0000">'localhost'</span><span style="color: #007700">, </span><span style="color: #DD0000">'fake_user'</span><span style="color: #007700">, </span><span style="color: #DD0000">'wrong_password'</span><span style="color: #007700">, </span><span style="color: #DD0000">'does_not_exist'</span><span style="color: #007700">);<br />if (</span><span style="color: #0000BB">$mysqli</span><span style="color: #007700">-></span><span style="color: #0000BB">connect_errno</span><span style="color: #007700">) {<br /> </span><span style="color: #FF8000">/* Use your preferred error logging method here */<br /> </span><span style="color: #0000BB">error_log</span><span style="color: #007700">(</span><span style="color: #DD0000">'Connection error: ' </span><span style="color: #007700">. </span><span style="color: #0000BB">$mysqli</span><span style="color: #007700">-></span><span style="color: #0000BB">connect_errno</span><span style="color: #007700">);<br />}</span></span></code></div> </div> <div class="example-contents"><p>过程化风格</p></div> <div class="example-contents"> <div class="phpcode"><code><span style="color: #000000"><span style="color: #0000BB"><?php<br /><br />mysqli_report</span><span style="color: #007700">(</span><span style="color: #0000BB">MYSQLI_REPORT_OFF</span><span style="color: #007700">);<br /></span><span style="color: #FF8000">/* @ is used to suppress warnings */<br /></span><span style="color: #0000BB">$link </span><span style="color: #007700">= @</span><span style="color: #0000BB">mysqli_connect</span><span style="color: #007700">(</span><span style="color: #DD0000">'localhost'</span><span style="color: #007700">, </span><span style="color: #DD0000">'fake_user'</span><span style="color: #007700">, </span><span style="color: #DD0000">'wrong_password'</span><span style="color: #007700">, </span><span style="color: #DD0000">'does_not_exist'</span><span style="color: #007700">);<br />if (!</span><span style="color: #0000BB">$link</span><span style="color: #007700">) {<br /> </span><span style="color: #FF8000">/* Use your preferred error logging method here */<br /> </span><span style="color: #0000BB">error_log</span><span style="color: #007700">(</span><span style="color: #DD0000">'Connection error: ' </span><span style="color: #007700">. </span><span style="color: #0000BB">mysqli_connect_errno</span><span style="color: #007700">());<br />}</span></span></code></div> </div> </div> </div> <div class="refsect1 seealso" id="refsect1-mysqli.connect-errno-seealso"> <h3 class="title">参见</h3> <p class="para"> <ul class="simplelist"> <li><span class="function"><a href="function.mysqli-connect.php" class="function" rel="rdfs-seeAlso">mysqli_connect()</a> - 别名 mysqli::__construct</span></li> <li><span class="function"><a href="mysqli.connect-error.php" class="function" rel="rdfs-seeAlso">mysqli_connect_error()</a> - Returns a description of the last connection error</span></li> <li><span class="function"><a href="mysqli.errno.php" class="function" rel="rdfs-seeAlso">mysqli_errno()</a> - 返回最近函数调用的错误代码</span></li> <li><span class="function"><a href="mysqli.error.php" class="function" rel="rdfs-seeAlso">mysqli_error()</a> - Returns a string description of the last error</span></li> <li><span class="function"><a href="mysqli.sqlstate.php" class="function" rel="rdfs-seeAlso">mysqli_sqlstate()</a> - 返回上一次 MySQL 操作的 SQLSTATE 错误</span></li> </ul> </p> </div> </div><?php manual_footer($setup); ?>