PHP Exercises : Get the last occurred error

Last update on April 19 2025 11:49:44 (UTC/GMT +8 hours)

20. Get Last Error

Write a PHP script to get the last occurred error.

Sample Solution:

PHP Code:

<?php
// Attempt to echo the variable $x (which is not defined)
echo $x;

// Print the details of the last error that occurred using error_get_last()
print_r(error_get_last());
?>

Explanation:

Undefined Variable:

echo $x tries to output the value of $x, but $x is not defined, which causes a PHP notice or warning error.

Retrieve Last Error:

error_get_last() returns an associative array with details of the last error that occurred, including the error type, message, file, and line number.

Display Error Details:

print_r(error_get_last()) outputs the array containing information about the last error (from the undefined variable), allowing for debugging or logging.

Output:

Array                                                       
(                                                           
    [type] => 8                                             
    [message] => Undefined variable: x                      
    [file] => /home/students/0d0149c0-f42e-11e6-a8c0-b738b9f
f32f9.php                                                   
    [line] => 2                                             
)

Flowchart:

Note: error_get_last() function returns an associative array describing the last error with keys "type", "message", "file" and "line". If the error has been caused by a PHP internal function then the "message" begins with its name. Returns NULL if there hasn't been an error yet.

For more Practice: Solve these Related Problems:

Write a PHP script to intentionally trigger errors and then capture the last error using error_get_last().
Write a PHP script to log the last occurred error to a file along with additional debugging information.
Write a PHP script to check for errors after a block of code executes and display the last error if present.
Write a PHP script to simulate multiple errors and then retrieve and display only the most recent error details.

PHP Code Editor:

Have another way to solve this solution? Contribute your code (and comments) through Disqus.

Previous: Arithmetic operations on character variables : $d = 'A00'. Using this variable print the following numbers.
Next: Write a PHP function to test whether a number is greater than 30, 20 or 10 using ternary operator.