PHP 5.4.31 Released

mysqli_stmt::$param_count

mysqli_stmt_param_count

(PHP 5)

mysqli_stmt::$param_count -- mysqli_stmt_param_countReturns the number of parameter for the given statement

Description

Object oriented style

Procedural style

int mysqli_stmt_param_count ( mysqli_stmt $stmt )

Returns the number of parameter markers present in the prepared statement.

Parameters

stmt

Procedural style only: A statement identifier returned by mysqli_stmt_init().

Return Values

Returns an integer representing the number of parameters.

Examples

Example #1 Object oriented style

<?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();
}

if (
$stmt $mysqli->prepare("SELECT Name FROM Country WHERE Name=? OR Code=?")) {

    
$marker $stmt->param_count;
    
printf("Statement has %d markers.\n"$marker);

    
/* close statement */
    
$stmt->close();
}

/* close connection */
$mysqli->close();
?>

Example #2 Procedural style

<?php
$link 
mysqli_connect("localhost""my_user""my_password""world");

/* check connection */
if (mysqli_connect_errno()) {
    
printf("Connect failed: %s\n"mysqli_connect_error());
    exit();
}

if (
$stmt mysqli_prepare($link"SELECT Name FROM Country WHERE Name=? OR Code=?")) {

    
$marker mysqli_stmt_param_count($stmt);
    
printf("Statement has %d markers.\n"$marker);

    
/* close statement */
    
mysqli_stmt_close($stmt);
}

/* close connection */
mysqli_close($link);
?>

The above examples will output:

Statement has 2 markers.

See Also

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User Contributed Notes 1 note

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Senthryl
5 years ago
This parameter (and presumably any other parameter in mysqli_stmt) will raise an error with the message "Property access is not allowed yet" if the statement was not prepared properly, or not prepared at all.

To prevent this, always ensure that the return value of the "prepare" statement is true before accessing these properties.
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