php-doc-en/reference/mysqli/functions/mysqli-query.xml

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  <refentry id="function.mysqli-query">
   <refnamediv>
    <refname>mysqli_query</refname>
    <refname>mysqli->query</refname>
    <refpurpose>Performs a query on the database</refpurpose>
   </refnamediv>
   <refsect1>
    <title>Description</title>
    <para>Procedural style:</para>
    <methodsynopsis>
     <type>mixed</type><methodname>mysqli_query</methodname>
     <methodparam><type>object</type><parameter>link</parameter></methodparam>
     <methodparam><type>string</type><parameter>query</parameter></methodparam>
     <methodparam choice='opt'><type>int</type><parameter>resultmode</parameter></methodparam>
    </methodsynopsis>
    <para>Object oriented style (method):</para>
    <classsynopsis>
     <ooclass><classname>mysqli</classname></ooclass>
     <methodsynopsis>
      <type>mixed</type>
      <methodname>query</methodname>
      <methodparam><type>string</type><parameter>query</parameter></methodparam>
     </methodsynopsis>
    </classsynopsis>
    <para>
     The <function>mysqli_query</function> function is used to simplify the
     act of performing a query against the database represented by the
     <parameter>link</parameter> parameter. 
    </para>
    <para>
     Functionally, using this
     function is identical to calling <function>mysqli_real_query</function>
     followed either by <function>mysqli_use_result</function> or 
     <function>mysqli_store_result</function> where <parameter>query</parameter>
     is the query string itself and <parameter>resultmode</parameter> is
     either the constant <literal>MYSQLI_USE_RESULT</literal> or 
     <literal>MYSQLI_STORE_RESULT</literal> depending
     on the desired behavior. By default, if the 
     <parameter>resultmode</parameter> is not provided 
     <literal>MYSQLI_STORE_RESULT</literal> is used.     
    </para>
    <para>
     If you execute <function>mysqli_query</function> with <parameter>resultmode</parameter>
     <literal>MYSQLI_USE_RESULT</literal> all subsequent calls will return error 
     <literal>Commands out of sync</literal> unless you call <function>mysqli_free_result</function>.
    </para>
   </refsect1>
   <refsect1>
    <title>Return values</title>
    <para>
     &return.success; For <literal>SELECT, SHOW, DESCRIBE</literal> or
     <literal>EXPLAIN</literal> <function>mysqli_query</function> will return
     a result object.
    </para>
   </refsect1>
   <refsect1>
    <title>See also</title>
    <para>
     <function>mysqli_real_query</function>,
     <function>mysqli_multi_query</function>,
     <function>mysqli_free_result</function>
    </para>
   </refsect1>
  </refentry>

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