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<refentry xml:id="mysqli-stmt.execute" xmlns="http://docbook.org/ns/docbook">
 <refnamediv>
  <refname>mysqli_stmt::execute</refname>
  <refname>mysqli_stmt_execute</refname>
  <refpurpose>Executes a prepared statement</refpurpose>
 </refnamediv>

 <refsect1 role="description">
  &reftitle.description;
  <para>&style.oop;</para>
  <methodsynopsis role="mysqli_stmt">
   <modifier>public</modifier> <type>bool</type><methodname>mysqli_stmt::execute</methodname>
   <methodparam choice="opt"><type class="union"><type>array</type><type>null</type></type><parameter>params</parameter><initializer>&null;</initializer></methodparam>
  </methodsynopsis>
  <para>&style.procedural;</para>
  <methodsynopsis>
   <type>bool</type><methodname>mysqli_stmt_execute</methodname>
   <methodparam><type>mysqli_stmt</type><parameter>statement</parameter></methodparam>
   <methodparam choice="opt"><type class="union"><type>array</type><type>null</type></type><parameter>params</parameter><initializer>&null;</initializer></methodparam>
  </methodsynopsis>
  <para>
   Executes previously prepared statement. The statement must be successfully 
   prepared prior to execution, using either
   the <function>mysqli_prepare</function> or
   <function>mysqli_stmt_prepare</function> function, or by passing the second
   argument to <methodname>mysqli_stmt::__construct</methodname>.
  </para>
  <para>
   If the statement is <literal>UPDATE</literal>, <literal>DELETE</literal>,
   or <literal>INSERT</literal>, the total number of affected rows can be
   determined by using the <function>mysqli_stmt_affected_rows</function>
   function. If the query yields a result set, it can be fetched using
   <function>mysqli_stmt_get_result</function> function or by fetching it
   row by row directly from the statement using
   <function>mysqli_stmt_fetch</function> function.
  </para>
 </refsect1>

 <refsect1 role="parameters">
  &reftitle.parameters;
  <para>
   <variablelist>
    &mysqli.stmt.description;
    <varlistentry>
     <term><parameter>params</parameter></term>
     <listitem>
      <para>
       An optional list &array; with as many elements as there are bound parameters in the SQL statement being executed. Each value is treated as a &string;.
      </para>
     </listitem>
    </varlistentry>
   </variablelist>
  </para>
 </refsect1>

 <refsect1 role="returnvalues">
  &reftitle.returnvalues;
  <para>
   &return.success;
  </para>
 </refsect1>

 <refsect1 role="errors">
  &reftitle.errors;
  &mysqli.conditionalexception;
 </refsect1>

 <refsect1 role="changelog">
  &reftitle.changelog;
  <informaltable>
   <tgroup cols="2">
    <thead>
     <row>
      <entry>&Version;</entry>
      <entry>&Description;</entry>
     </row>
    </thead>
    <tbody>
     <row>
      <entry>8.1.0</entry>
      <entry>
       The optional <parameter>params</parameter> parameter has been added.
      </entry>
     </row>
    </tbody>
   </tgroup>
  </informaltable>
 </refsect1>

 <refsect1 role="examples">
  &reftitle.examples;
  <example>
   <title>Execute a prepared statement with bound variables</title>
   <para>&style.oop;</para>
   <programlisting role="php">
<![CDATA[
<?php

mysqli_report(MYSQLI_REPORT_ERROR | MYSQLI_REPORT_STRICT);
$mysqli = new mysqli("localhost", "my_user", "my_password", "world");

$mysqli->query("CREATE TEMPORARY TABLE myCity LIKE City");

/* Prepare an insert statement */
$stmt = $mysqli->prepare("INSERT INTO myCity (Name, CountryCode, District) VALUES (?,?,?)");

/* Bind variables to parameters */
$stmt->bind_param("sss", $val1, $val2, $val3);

$val1 = 'Stuttgart';
$val2 = 'DEU';
$val3 = 'Baden-Wuerttemberg';

/* Execute the statement */
$stmt->execute();

$val1 = 'Bordeaux';
$val2 = 'FRA';
$val3 = 'Aquitaine';

/* Execute the statement */
$stmt->execute();

/* Retrieve all rows from myCity */
$query = "SELECT Name, CountryCode, District FROM myCity";
$result = $mysqli->query($query);
while ($row = $result->fetch_row()) {
    printf("%s (%s,%s)\n", $row[0], $row[1], $row[2]);
}
]]>
   </programlisting>
   <para>&style.procedural;</para>
   <programlisting role="php">
<![CDATA[
<?php

mysqli_report(MYSQLI_REPORT_ERROR | MYSQLI_REPORT_STRICT);
$link = mysqli_connect("localhost", "my_user", "my_password", "world");

mysqli_query($link, "CREATE TEMPORARY TABLE myCity LIKE City");

/* Prepare an insert statement */
$stmt = mysqli_prepare($link, "INSERT INTO myCity (Name, CountryCode, District) VALUES (?,?,?)");

/* Bind variables to parameters */
mysqli_stmt_bind_param($stmt, "sss", $val1, $val2, $val3);

$val1 = 'Stuttgart';
$val2 = 'DEU';
$val3 = 'Baden-Wuerttemberg';

/* Execute the statement */
mysqli_stmt_execute($stmt);

$val1 = 'Bordeaux';
$val2 = 'FRA';
$val3 = 'Aquitaine';

/* Execute the statement */
mysqli_stmt_execute($stmt);

/* Retrieve all rows from myCity */
$query = "SELECT Name, CountryCode, District FROM myCity";
$result = mysqli_query($link, $query);
while ($row = mysqli_fetch_row($result)) {
    printf("%s (%s,%s)\n", $row[0], $row[1], $row[2]);
}
]]>
     </programlisting>
     &examples.outputs;
     <screen>
<![CDATA[
Stuttgart (DEU,Baden-Wuerttemberg)
Bordeaux (FRA,Aquitaine)
]]>
   </screen>
  </example>
  <example>
   <title>Execute a prepared statement with an array of values</title>
   <para>&style.oop;</para>
   <programlisting role="php">
<![CDATA[
<?php

mysqli_report(MYSQLI_REPORT_ERROR | MYSQLI_REPORT_STRICT);
$mysqli = new mysqli('localhost', 'my_user', 'my_password', 'world');

$mysqli->query('CREATE TEMPORARY TABLE myCity LIKE City');

/* Prepare an insert statement */
$stmt = $mysqli->prepare('INSERT INTO myCity (Name, CountryCode, District) VALUES (?,?,?)');

/* Execute the statement */
$stmt->execute(['Stuttgart', 'DEU', 'Baden-Wuerttemberg']);

/* Retrieve all rows from myCity */
$query = 'SELECT Name, CountryCode, District FROM myCity';
$result = $mysqli->query($query);
while ($row = $result->fetch_row()) {
    printf("%s (%s,%s)\n", $row[0], $row[1], $row[2]);
}
]]>
   </programlisting>
   <para>&style.procedural;</para>
   <programlisting role="php">
<![CDATA[
<?php

mysqli_report(MYSQLI_REPORT_ERROR | MYSQLI_REPORT_STRICT);
$link = mysqli_connect('localhost', 'my_user', 'my_password', 'world');

mysqli_query($link, 'CREATE TEMPORARY TABLE myCity LIKE City');

/* Prepare an insert statement */
$stmt = mysqli_prepare($link, 'INSERT INTO myCity (Name, CountryCode, District) VALUES (?,?,?)');

/* Execute the statement */
mysqli_stmt_execute($stmt, ['Stuttgart', 'DEU', 'Baden-Wuerttemberg']);

/* Retrieve all rows from myCity */
$query = 'SELECT Name, CountryCode, District FROM myCity';
$result = mysqli_query($link, $query);
while ($row = mysqli_fetch_row($result)) {
    printf("%s (%s,%s)\n", $row[0], $row[1], $row[2]);
}
]]>
   </programlisting>
   &examples.outputs;
   <screen>
<![CDATA[
Stuttgart (DEU,Baden-Wuerttemberg)
]]>
   </screen>
  </example>
 </refsect1>

 <refsect1 role="seealso">
  &reftitle.seealso;
  <para>
   <simplelist>
    <member><function>mysqli_execute_query</function></member>
    <member><function>mysqli_prepare</function></member>
    <member><function>mysqli_stmt_bind_param</function></member>
    <member><function>mysqli_stmt_get_result</function></member>
   </simplelist>
  </para>
 </refsect1>

</refentry>
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