📄 function.sybase-set-message-handler.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>Sets the handler called when a server message is raised</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.sybase-select-db.html">sybase_select_db</a></div> <div class="next" style="text-align: right; float: right;"><a href="function.sybase-unbuffered-query.html">sybase_unbuffered_query</a></div> <div class="up"><a href="ref.sybase.html">Sybase Functions</a></div> <div class="home"><a href="index.html">PHP Manual</a></div></div><hr /><div id="function.sybase-set-message-handler" class="refentry"> <div class="refnamediv"> <h1 class="refname">sybase_set_message_handler</h1> <p class="verinfo">(PHP 4 >= 4.3.0, PHP 5)</p><p class="refpurpose"><span class="refname">sybase_set_message_handler</span> — <span class="dc-title">Sets the handler called when a server message is raised</span></p> </div> <div class="refsect1 description"> <h3 class="title">Description</h3> <div class="methodsynopsis dc-description"> <span class="type">bool</span> <span class="methodname"><b><b>sybase_set_message_handler</b></b></span> ( <span class="methodparam"><span class="type"><a href="language.pseudo-types.html#language.types.callback" class="type callback">callback</a></span> <tt class="parameter">$handler</tt></span> [, <span class="methodparam"><span class="type">resource</span> <tt class="parameter">$connection</tt></span> ] )</div> <p class="para rdfs-comment"> <b>sybase_set_message_handler()</b> sets a user function to handle messages generated by the server. You may specify the name of a global function, or use an array to specify an object reference and a method name. </p> </div> <div class="refsect1 parameters"> <h3 class="title">Parameters</h3> <p class="para"> <dl> <dt> <span class="term"><i><tt class="parameter">handler</tt></i></span> <dd> <p class="para"> The handler expects five arguments in the following order: message number, severity, state, line number and description. The first four are integers. The last is a string. If the function returns <b><tt>FALSE</tt></b>, PHP generates an ordinary error message. </p> </dd> </dt> <dt> <span class="term"><i><tt class="parameter">connection</tt></i></span> <dd> <p class="para"> </p> </dd> </dt> </dl> </p> </div> <div class="refsect1 returnvalues"> <h3 class="title">Return Values</h3> <p class="para"> Returns <b><tt>TRUE</tt></b> on success or <b><tt>FALSE</tt></b> on failure. </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">4.3.5</td> <td colspan="1" rowspan="1" align="left"> The <i><tt class="parameter">connection</tt></i> parameter was added. </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>sybase_set_message_handler()</b> callback function</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">function </span><span style="color: #0000BB">msg_handler</span><span style="color: #007700">(</span><span style="color: #0000BB">$msgnumber</span><span style="color: #007700">, </span><span style="color: #0000BB">$severity</span><span style="color: #007700">, </span><span style="color: #0000BB">$state</span><span style="color: #007700">, </span><span style="color: #0000BB">$line</span><span style="color: #007700">, </span><span style="color: #0000BB">$text</span><span style="color: #007700">)<br /> {<br /> </span><span style="color: #0000BB">var_dump</span><span style="color: #007700">(</span><span style="color: #0000BB">$msgnumber</span><span style="color: #007700">, </span><span style="color: #0000BB">$severity</span><span style="color: #007700">, </span><span style="color: #0000BB">$state</span><span style="color: #007700">, </span><span style="color: #0000BB">$line</span><span style="color: #007700">, </span><span style="color: #0000BB">$text</span><span style="color: #007700">);<br /> }<br /><br /> </span><span style="color: #0000BB">sybase_set_message_handler</span><span style="color: #007700">(</span><span style="color: #DD0000">'msg_handler'</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">?></span></span></code></div> </div> </div> <div class="example"> <p><b>Example #2 <b>sybase_set_message_handler()</b> callback to a class</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">Sybase </span><span style="color: #007700">{<br /> function </span><span style="color: #0000BB">handler</span><span style="color: #007700">(</span><span style="color: #0000BB">$msgnumber</span><span style="color: #007700">, </span><span style="color: #0000BB">$severity</span><span style="color: #007700">, </span><span style="color: #0000BB">$state</span><span style="color: #007700">, </span><span style="color: #0000BB">$line</span><span style="color: #007700">, </span><span style="color: #0000BB">$text</span><span style="color: #007700">)<br /> {<br /> </span><span style="color: #0000BB">var_dump</span><span style="color: #007700">(</span><span style="color: #0000BB">$msgnumber</span><span style="color: #007700">, </span><span style="color: #0000BB">$severity</span><span style="color: #007700">, </span><span style="color: #0000BB">$state</span><span style="color: #007700">, </span><span style="color: #0000BB">$line</span><span style="color: #007700">, </span><span style="color: #0000BB">$text</span><span style="color: #007700">);<br /> }<br /> }<br /><br /> </span><span style="color: #0000BB">$sybase</span><span style="color: #007700">= new </span><span style="color: #0000BB">Sybase</span><span style="color: #007700">();<br /> </span><span style="color: #0000BB">sybase_set_message_handler</span><span style="color: #007700">(array(</span><span style="color: #0000BB">$sybase</span><span style="color: #007700">, </span><span style="color: #DD0000">'handler'</span><span style="color: #007700">));<br /></span><span style="color: #0000BB">?></span></span></code></div> </div> </div> <div class="example"> <p><b>Example #3 <b>sybase_set_message_handler()</b> unhandled messages</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">// Return FALSE from this function to indicate you can't handle<br /> // this. The error is printed out as a warning, the way you're used<br /> // to it if there is no handler installed.<br /> </span><span style="color: #007700">function </span><span style="color: #0000BB">msg_handler</span><span style="color: #007700">(</span><span style="color: #0000BB">$msgnumber</span><span style="color: #007700">, </span><span style="color: #0000BB">$severity</span><span style="color: #007700">, </span><span style="color: #0000BB">$state</span><span style="color: #007700">, </span><span style="color: #0000BB">$line</span><span style="color: #007700">, </span><span style="color: #0000BB">$text</span><span style="color: #007700">)<br /> {<br /> if (</span><span style="color: #0000BB">257 </span><span style="color: #007700">== </span><span style="color: #0000BB">$msgnumber</span><span style="color: #007700">) {<br /> return </span><span style="color: #0000BB">false</span><span style="color: #007700">;<br /> }<br /> </span><span style="color: #0000BB">var_dump</span><span style="color: #007700">(</span><span style="color: #0000BB">$msgnumber</span><span style="color: #007700">, </span><span style="color: #0000BB">$severity</span><span style="color: #007700">, </span><span style="color: #0000BB">$state</span><span style="color: #007700">, </span><span style="color: #0000BB">$line</span><span style="color: #007700">, </span><span style="color: #0000BB">$text</span><span style="color: #007700">);<br /> }<br /><br /> </span><span style="color: #0000BB">sybase_set_message_handler</span><span style="color: #007700">(</span><span style="color: #DD0000">'msg_handler'</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>: <span class="simpara">This function is only available whenusing the CT library interface to Sybase, and not with the DB library.</span></p></blockquote> </div></div><hr /><div style="text-align: center;"> <div class="prev" style="text-align: left; float: left;"><a href="function.sybase-select-db.html">sybase_select_db</a></div> <div class="next" style="text-align: right; float: right;"><a href="function.sybase-unbuffered-query.html">sybase_unbuffered_query</a></div> <div class="up"><a href="ref.sybase.html">Sybase 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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