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PHP mysqli: error_list() Function

mysqli_error_list() function / mysqli::$error_list

The mysqli_error_list() function / mysqli::$error_list returns a list of errors for the most recent function call, if any.

Syntax:

Object oriented style

array $mysqli->error_list;

Procedural style

array mysqli_error_list ( mysqli $link )

Parameter:

Name Description Required/Optional
link A link identifier returned by mysqli_connect() or mysqli_init() Required for procedural style only and Optional for Object oriented style

Usage: Procedural style

mysqli_error_list(connection);

Parameter:

Name Description Required/Optional
connection Specifies the MySQL connection to use. Required

Return value:

A list of errors, each as an associative array containing the errno, error, and sqlstate.

Version:PHP 5 >= 5.4.0, PHP 7

Example of object oriented style:

<?php
$mysqli = new mysqli("localhost", "user1", "datasoft123", "hr");

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

if (!$mysqli->query("SET a=1")) {
    print_r($mysqli->error_list);
}

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

Example of procedural style:

<?php

$link = mysqli_connect("localhost", "user1", "datasoft123", "hr");

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

if (!mysqli_query($link, "SET a=1")) {
    print_r(mysqli_error_list($link));
}

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

Output:

Array
(
    [0] => Array
        (
            [errno] => 1193
            [sqlstate] => HY000
            [error] => Unknown system variable 'a'
        )

)

Example:

<?php
$con=mysqli_connect("localhost","my_user","my_password","my_db");
// Check connection
if (mysqli_connect_errno())
  {
  echo "Failed to connect to MySQL: " . mysqli_connect_error();
  }

// Perform a query, check for error
if (!mysqli_query($con,"INSERT INTO employees (First_Name) VALUES ('David')"))
  {
  print_r(mysqli_error_list($con));
  }

mysqli_close($con);
?>

Sample Output:

Parse error: parse error in C:\wamp\www\php\function-reference\mysqli.php on line 10

See also

PHP Function Reference

Previous: errno
Next: error



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PHP: Tips of the Day

To use the constant simply use its name:

Example:

if (EARTH_IS_FLAT) {
 print "Earth is flat";
}
print APP_ENV_UPPERCASE;

Output:



or if you don't know the name of the constant in advance, use the constant function:


// this code is equivalent to the above code
$const1 = "EARTH_IS_FLAT";
$const2 = "APP_ENV_UPPERCASE";
if (constant($const1)) {
 print "Earth is flat";
}
print constant($const2);



Output:




 


























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