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<?xml version="1.0" encoding="utf-8"?>
<!-- $Revision: 297028 $ -->
<appendix xml:id="mysql.constants" xmlns="http://docbook.org/ns/docbook">
&reftitle.constants;
&extension.constants;
<para>
Since PHP 4.3.0 it is possible to specify additional client flags for the
<function>mysql_connect</function> and <function>mysql_pconnect</function>
functions. The following constants are defined:
<table xml:id="mysql.client-flags">
<title>MySQL client constants</title>
<tgroup cols="2">
<thead>
<row>
<entry>Constant</entry>
<entry>Description</entry>
</row>
</thead>
<tbody>
<row>
<entry><constant>MYSQL_CLIENT_COMPRESS</constant></entry>
<entry>Use compression protocol</entry>
</row>
<row>
<entry><constant>MYSQL_CLIENT_IGNORE_SPACE</constant></entry>
<entry>Allow space after function names</entry>
</row>
<row>
<entry><constant>MYSQL_CLIENT_INTERACTIVE</constant></entry>
<entry>Allow interactive_timeout seconds (instead of <option>wait_timeout</option>) of
inactivity before closing the connection.</entry>
</row>
<row>
<entry><constant>MYSQL_CLIENT_SSL</constant></entry>
<entry>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.
</entry>
</row>
</tbody>
</tgroup>
</table>
</para>
<para>
The function <function>mysql_fetch_array</function> uses a constant for
the different types of result arrays. The following constants are
defined:
<table>
<title>MySQL fetch constants</title>
<tgroup cols="2">
<thead>
<row>
<entry>Constant</entry>
<entry>Description</entry>
</row>
</thead>
<tbody>
<row>
<entry><constant>MYSQL_ASSOC</constant></entry>
<entry>
Columns are returned into the array having the fieldname as the array
index.
</entry>
</row>
<row>
<entry><constant>MYSQL_BOTH</constant></entry>
<entry>
Columns are returned into the array having both a numerical index
and the fieldname as the array index.
</entry>
</row>
<row>
<entry><constant>MYSQL_NUM</constant></entry>
<entry>
Columns are returned into the array having a numerical index to the
fields. This index starts with 0, the first field in the result.
</entry>
</row>
</tbody>
</tgroup>
</table>
</para>
</appendix>
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