Online PHP editor | output for 1YXYk

@ 2024-10-01T13:07:38Z

<?php
declare(strict_types=1); // print() ignores strict_types...

print(1 + 2) * 3;
// outputs "9"; the parentheses cause 1+2 to be evaluated first, then 3*3
// the print statement sees the whole expression as one argument
// As for the type mismatch? the strict_types ? ignored..

echo "\n";

if ( print("hello") && false ) {
    print "WTF: inside if";
} else {
    print "OK: inside else";
}

echo "\n";

if ( 1 && false ) {
    print "WTF: inside if";
} else {
    print "OK: inside else";
}

echo "\n";

print "hello " && print "world";
// outputs "world1"; ... WTF?

echo "\n";


ob_start();
print "hello " && print "world";
$str = ob_get_clean();
assert(str_contains($str, 'hello'));

Output for 8.1.0 - 8.1.30, 8.2.0 - 8.2.24, 8.3.0 - 8.3.12: 9 WTF: inside if OK: inside else world1 Fatal error: Uncaught AssertionError: assert(str_contains($str, 'hello')) in /in/1YXYk:36 Stack trace: #0 /in/1YXYk(36): assert(false, 'assert(str_cont...') #1 {main} thrown in /in/1YXYk on line 36
Process exited with code 255.
Output for 7.4.33: 9 WTF: inside if OK: inside else world1 Fatal error: Uncaught Error: Call to undefined function str_contains() in /in/1YXYk:36 Stack trace: #0 {main} thrown in /in/1YXYk on line 36
Process exited with code 255.
Output for 5.6.40: Warning: Unsupported declare 'strict_types' in /in/1YXYk on line 2 9 WTF: inside if OK: inside else world1 Fatal error: Call to undefined function str_contains() in /in/1YXYk on line 36
Process exited with code 255.

preferences:dark modelive preview