Online PHP editor | output for BaUji

@ 2017-06-28T13:49:37Z

<?php

//We set an error handler to throw an ErrorException whenever an error is triggered
set_error_handler(function (int $severity, string $message, string $filename, int $line) {
    echo "Throwing ErrorException\n";
    throw new ErrorException($message, 0, $severity, $filename, $line);
});

//We're going to test this error handler passing wrong arguments to array_diff
//array_diff compares array items CASTING them to string. Yes, it is retarded. No, it's not the lol here.
//http://php.net/manual/en/function.array-diff.php

//We declare an object that can't be cast to string
$stdObject = new stdClass();

//First case: let's trigger an error
try {
    $hello = (string) $stdObject;
}catch(ErrorException $ee){
    //Handler is called, exception is thrown and catched here. Yay!
    echo "Catched exception: " . $ee->getMessage() . "\n";
}

echo "\n----------\n";

//Second case: let's trigger an error
try {
    array_diff([], [$stdObject]);
}catch(ErrorException $ee){
    //Handler is called, exception is thrown and catched here. Yay!
    echo "Catched exception: " . $ee->getMessage() . "\n";
}

echo "\n----------\n";

//Third case: let's trigger a slightly different error
try {
    array_diff([$stdObject], [$stdObject]);
}catch(ErrorException $ee){
    //Handler is called, exception is thrown but... IT IS NOT CATCHED!
    echo "Catched exception: " . $ee->getMessage() . "\n";
}

Output for 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.31, 8.2.0 - 8.2.27, 8.3.0 - 8.3.15, 8.4.1 - 8.4.2: Fatal error: Uncaught Error: Object of class stdClass could not be converted to string in /in/BaUji:18 Stack trace: #0 {main} thrown in /in/BaUji on line 18
Process exited with code 255.
Output for 7.3.0 - 7.3.33: Throwing ErrorException Catched exception: Object of class stdClass could not be converted to string ---------- ---------- Throwing ErrorException Warning: Uncaught ErrorException: Object of class stdClass could not be converted to string in /in/BaUji:38 Stack trace: #0 [internal function]: {closure}(4096, 'Object of class...', '/in/BaUji', 38, Array) #1 /in/BaUji(38): array_diff(Array, Array) #2 {main} thrown in /in/BaUji on line 38 Fatal error: Object of class stdClass could not be converted to string in /in/BaUji on line 38
Process exited with code 255.
Output for 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33: Throwing ErrorException Catched exception: Object of class stdClass could not be converted to string ---------- Throwing ErrorException Catched exception: Object of class stdClass could not be converted to string ---------- Throwing ErrorException Warning: Uncaught ErrorException: Object of class stdClass could not be converted to string in /in/BaUji:38 Stack trace: #0 [internal function]: {closure}(4096, 'Object of class...', '/in/BaUji', 38, Array) #1 /in/BaUji(38): array_diff(Array, Array) #2 {main} thrown in /in/BaUji on line 38 Fatal error: Object of class stdClass could not be converted to string in /in/BaUji on line 38
Process exited with code 255.
Output for 5.6.38 - 5.6.40: Catchable fatal error: Argument 1 passed to {closure}() must be an instance of int, integer given in /in/BaUji on line 4
Process exited with code 255.

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