Online PHP editor | output for EsDVZ

@ 2017-03-11T18:08:05Z

<?php
/**
 * driver.php
 * ----------
 * Registers a shutdown-function, that includes "error_handler.php" (which merely defines
 * a innocuous function named "handle_error", and includes "throw_fatal_error.php"
 * (that provokes an error  declaring two classes with the same name).
 *
 * What happens is that the fatal error is thrown, shutdownFunc() is called and
 * "error_handler.php" is included -- but it occurs another fatal error, complaining that
 * handle_error() (defined in "error_handler.php") is undefined.
 * The problem does not happen with classes, as can be demonstrated by ErrorClass,
 * which is defined in "error_handler.php" and it's existence checked on shutdownFunc().
 *
 * VERY IMPORTANT NOTE
 *   If "throw_fatal_error.php" does not include a namespace or if neither class inherits
 *   from another, everything works ok!
 */
function shutdownFunc () {
	eval(<<<'PHP'
function handle_error () {
	echo "handle_error() is here<br />\n";
}


class ErrorClass extends \stdclass {}
PHP
	);
	echo "We're about to call <em>handle_error()</em>...<br />\n";
	echo 'ErrorClass is ', class_exists ('ErrorClass') ? 'undefined' : 'defined', "<br />\n";
	handle_error();
}

register_shutdown_function ('shutdownFunc');

// Make sure errors are printed.
ini_set ('display_errors', 'On');
// Include the file that provokes the error.
eval(<<<'PHP'
namespace test;

class aclass {}

class aclass extends \stdclass {}
PHP
);

Output for 7.0.18 - 7.0.33, 7.1.4 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.4, 8.3.6: Fatal error: Cannot declare class test\aclass, because the name is already in use in /in/EsDVZ(40) : eval()'d code on line 5 We're about to call handle_error()... ErrorClass is undefined handle_error() is here 
Process exited with code 255.
Output for 8.3.5: Warning: PHP Startup: Unable to load dynamic library 'sodium.so' (tried: /usr/lib/php/8.3.5/modules/sodium.so (libsodium.so.23: cannot open shared object file: No such file or directory), /usr/lib/php/8.3.5/modules/sodium.so.so (/usr/lib/php/8.3.5/modules/sodium.so.so: cannot open shared object file: No such file or directory)) in Unknown on line 0 Fatal error: Cannot declare class test\aclass, because the name is already in use in /in/EsDVZ(40) : eval()'d code on line 5 We're about to call handle_error()... ErrorClass is undefined handle_error() is here 
Process exited with code 255.
Output for 7.0.0 - 7.0.17, 7.1.0 - 7.1.3: Fatal error: Cannot declare class test\aclass, because the name is already in use in /in/EsDVZ(44) : eval()'d code on line 5 We're about to call handle_error()... ErrorClass is undefined handle_error() is here 
Process exited with code 255.
Output for 5.6.0 - 5.6.40: Fatal error: Cannot redeclare class test\aclass in /in/EsDVZ(46) : eval()'d code on line 5 We're about to call handle_error()... ErrorClass is defined Fatal error: Call to undefined function handle_error() in /in/EsDVZ on line 31
Process exited with code 255.

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