3v4l.org

run code in 200+ php & hhvm versions

@

<?php

class FooBar implements Iterator {
    function __construct()   { echo "Constructing new FooBar\n"; }
    function __destruct()    { echo "Destructing FooBar\n"; }
    function current ()      { throw new Exception; }
    function key ()          { return 0; }
    function next ()         {}
    function rewind ()       {}
    function valid ()        { return true; }
}

function foo() {
    $f = new FooBar;
    yield from $f;
}

function bar() {
    echo "Starting bar()\n";
    $x = foo();
    var_dump($x->current());
    try { $x->next(); } catch (Exception $e) {}
    var_dump($x->current());
    try { $x->next(); } catch (Exception $e) {}
    var_dump($x->current());
    try { $x->next(); } catch (Exception $e) {}
    echo "Unsetting \$x\n";
    unset($x);
    echo "Finishing bar()\n";
}

bar();

eol versions

Output for 7.0.0 - 7.2.0: Starting bar() Constructing new FooBar Destructing FooBar Fatal error: Uncaught Exception in /in/gMZC8:6 Stack trace: #0 [internal function]: FooBar->current() #1 /in/gMZC8(21): Generator->current() #2 /in/gMZC8(32): bar() #3 {main} thrown in /in/gMZC8 on line 6
Process exited with code 255.
Output for 5.5.24 - 5.6.28: Parse error: syntax error, unexpected '$f' (T_VARIABLE) in /in/gMZC8 on line 15
Process exited with code 255.
Output for 5.4.9 - 5.4.45: Parse error: syntax error, unexpected 'from' (T_STRING) in /in/gMZC8 on line 15
Process exited with code 255.
Output for 5.3.19 - 5.3.29: Parse error: syntax error, unexpected T_STRING in /in/gMZC8 on line 15
Process exited with code 255.