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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>Predefined Constants</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="mysql.resources.html">Resource Types</a></div> <div class="next" style="text-align: right; float: right;"><a href="mysql.examples.html">Examples</a></div> <div class="up"><a href="book.mysql.html">MySQL</a></div> <div class="home"><a href="index.html">PHP Manual</a></div></div><hr /><div> <h1>Predefined Constants</h1> <p class="simpara">The constants below are defined by this extension, andwill only be available when the extension has eitherbeen compiled into PHP or dynamically loaded at runtime.</p> <p class="para"> Since PHP 4.3.0 it is possible to specify additional client flags for the <a href="function.mysql-connect.html" class="function">mysql_connect()</a> and <a href="function.mysql-pconnect.html" class="function">mysql_pconnect()</a> functions. The following constants are defined: <table border="5"> <caption><b>MySQL client constants</b></caption> <colgroup> <thead valign="middle"> <tr valign="middle"> <th colspan="1">Constant</th> <th colspan="1">Description</th> </tr> </thead> <tbody valign="middle" class="tbody"> <tr valign="middle"> <td colspan="1" rowspan="1" align="left">MYSQL_CLIENT_COMPRESS</td> <td colspan="1" rowspan="1" align="left">Use compression protocol</td> </tr> <tr valign="middle"> <td colspan="1" rowspan="1" align="left">MYSQL_CLIENT_IGNORE_SPACE</td> <td colspan="1" rowspan="1" align="left">Allow space after function names</td> </tr> <tr valign="middle"> <td colspan="1" rowspan="1" align="left">MYSQL_CLIENT_INTERACTIVE</td> <td colspan="1" rowspan="1" align="left">Allow interactive_timeout seconds (instead of wait_timeout) of inactivity before closing the connection.</td> </tr> <tr valign="middle"> <td colspan="1" rowspan="1" align="left">MYSQL_CLIENT_SSL</td> <td colspan="1" rowspan="1" align="left">Use SSL encryption. This flag is only available with version 4.x of the MySQL client library or newer. Version 3.23.x is bundled both with PHP 4 and Windows binaries of PHP 5. </td> </tr> </tbody> </colgroup> </table> </p> <p class="para"> The function <a href="function.mysql-fetch-array.html" class="function">mysql_fetch_array()</a> uses a constant for the different types of result arrays. The following constants are defined: <table border="5"> <caption><b>MySQL fetch constants</b></caption> <colgroup> <thead valign="middle"> <tr valign="middle"> <th colspan="1">Constant</th> <th colspan="1">Description</th> </tr> </thead> <tbody valign="middle" class="tbody"> <tr valign="middle"> <td colspan="1" rowspan="1" align="left">MYSQL_ASSOC</td> <td colspan="1" rowspan="1" align="left"> Columns are returned into the array having the fieldname as the array index. </td> </tr> <tr valign="middle"> <td colspan="1" rowspan="1" align="left">MYSQL_BOTH</td> <td colspan="1" rowspan="1" align="left"> Columns are returned into the array having both a numerical index and the fieldname as the array index. </td> </tr> <tr valign="middle"> <td colspan="1" rowspan="1" align="left">MYSQL_NUM</td> <td colspan="1" rowspan="1" align="left"> Columns are returned into the array having a numerical index to the fields. This index starts with 0, the first field in the result. </td> </tr> </tbody> </colgroup> </table> </p></div><hr /><div style="text-align: center;"> <div class="prev" style="text-align: left; float: left;"><a href="mysql.resources.html">Resource Types</a></div> <div class="next" style="text-align: right; float: right;"><a href="mysql.examples.html">Examples</a></div> <div class="up"><a href="book.mysql.html">MySQL</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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