Object oriented style
Procedural style
Bind variables for the parameter markers in the SQL statement that was passed to mysqli_prepare().
Note:
If data size of a variable exceeds max. allowed packet size (max_allowed_packet), you have to specify b in
types
and use mysqli_stmt_send_long_data() to send the data in packets.
Note:
Care must be taken when using mysqli_stmt_bind_param() in conjunction with call_user_func_array(). Note that mysqli_stmt_bind_param() requires parameters to be passed by reference, whereas call_user_func_array() can accept as a parameter a list of variables that can represent references or values.
Procedural style only: A statement identifier returned by mysqli_stmt_init().
A string that contains one or more characters which specify the types for the corresponding bind variables:
Character | Description |
---|---|
i | corresponding variable has type integer |
d | corresponding variable has type double |
s | corresponding variable has type string |
b | corresponding variable is a blob and will be sent in packets |
The number of variables and length of string types
must match the parameters in the statement.
Returns TRUE
on success or FALSE
on failure.
<?php $mysqli = new mysqli('localhost', 'my_user', 'my_password', 'world'); /* check connection */ if (mysqli_connect_errno()) { printf("Connect failed: %s\n", mysqli_connect_error()); exit(); } $stmt = $mysqli->prepare("INSERT INTO CountryLanguage VALUES (?, ?, ?, ?)"); $stmt->bind_param('sssd', $code, $language, $official, $percent); $code = 'DEU'; $language = 'Bavarian'; $official = "F"; $percent = 11.2; /* execute prepared statement */ $stmt->execute(); printf("%d Row inserted.\n", $stmt->affected_rows); /* close statement and connection */ $stmt->close(); /* Clean up table CountryLanguage */ $mysqli->query("DELETE FROM CountryLanguage WHERE Language='Bavarian'"); printf("%d Row deleted.\n", $mysqli->affected_rows); /* close connection */ $mysqli->close(); ?>
<?php $link = mysqli_connect('localhost', 'my_user', 'my_password', 'world'); /* check connection */ if (!$link) { printf("Connect failed: %s\n", mysqli_connect_error()); exit(); } $stmt = mysqli_prepare($link, "INSERT INTO CountryLanguage VALUES (?, ?, ?, ?)"); mysqli_stmt_bind_param($stmt, 'sssd', $code, $language, $official, $percent); $code = 'DEU'; $language = 'Bavarian'; $official = "F"; $percent = 11.2; /* execute prepared statement */ mysqli_stmt_execute($stmt); printf("%d Row inserted.\n", mysqli_stmt_affected_rows($stmt)); /* close statement and connection */ mysqli_stmt_close($stmt); /* Clean up table CountryLanguage */ mysqli_query($link, "DELETE FROM CountryLanguage WHERE Language='Bavarian'"); printf("%d Row deleted.\n", mysqli_affected_rows($link)); /* close connection */ mysqli_close($link); ?>
The above examples will output:
1 Row inserted. 1 Row deleted.
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