constants.xml

<?xml version="1.0" encoding="utf-8"?>
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<appendix xml:id="mysql.constants" xmlns="http://docbook.org/ns/docbook">
 &reftitle.constants;
 &extension.constants;
 <para>
  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 xml:id="constant.mysql-client-compress">
       <entry><constant>MYSQL_CLIENT_COMPRESS</constant></entry>
       <entry>Use compression protocol</entry>
      </row>
      <row xml:id="constant.mysql-client-ignore-space">
       <entry><constant>MYSQL_CLIENT_IGNORE_SPACE</constant></entry>
       <entry>Allow space after function names</entry>
      </row>
      <row xml:id="constant.mysql-client-interactive">
       <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 xml:id="constant.mysql-client-ssl">
       <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 xml:id="mysql.constants.fetch">
   <title>MySQL fetch constants</title>
   <tgroup cols="2">
    <thead>
     <row>
      <entry>Constant</entry>
      <entry>Description</entry>
     </row>
    </thead>
    <tbody>
     <row xml:id="constant.mysql-assoc">
      <entry><constant>MYSQL_ASSOC</constant></entry>
      <entry>
       Columns are returned into the array having the fieldname as the array
       index.
      </entry>
     </row>
     <row xml:id="constant.mysql-both">
      <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 xml:id="constant.mysql-num">
      <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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