How to Handle Fatal PHP Errors (E_ERROR) in PHP 5.2 ?

Handling Fatal PHP (E_ERROR) Errors

Problem:

If a fatal error occurs in a PHP script, such as calling a non-existent function, the error cannot be caught using the set_error_handler() function. How can you handle these critical errors?

Solution:

To catch fatal errors in PHP 5.2 , utilize the register_shutdown_function() function:

register_shutdown_function("fatal_handler");

function fatal_handler() {
    $errfile = "unknown file";
    $errstr = "shutdown";
    $errno = E_CORE_ERROR;
    $errline = 0;

    $error = error_get_last();

    if ($error !== NULL) {
        $errno = $error["type"];
        $errfile = $error["file"];
        $errline = $error["line"];
        $errstr = $error["message"];

        error_mail(format_error($errno, $errstr, $errfile, $errline));
    }
}

You need to implement the error_mail() and format_error() functions, for instance:

function format_error($errno, $errstr, $errfile, $errline) {
    $trace = print_r(debug_backtrace(false), true);

    $content = "
    <table>
        <thead><th>Item</th><th>Description</th></thead>
        <tbody>
            <tr>
                <th>Error</th>
                <td><pre class="brush:php;toolbar:false">$errstr

Errno

$errno

File $errfile Line $errline Trace

$trace

"; return $content; }

For sending emails, employ Swift Mailer to define the error_mail() function.

Additional Resources:

• $php_errormsg
• Predefined Constants

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