Online PHP editor | output for SgYsC

@ 2017-07-05T22:07:00Z

<?php

class test {
    public static $callCounters = [];
    public function call($index) {
        if (!isset(self::$callCounters[$index])) {
            self::$callCounters[$index] = 0;
        }
        ++self::$callCounters[$index];
    }
};

$x = new test();

$indexes = range('a','e');

foreach($indexes as $index) {
    for($i = 0; $i <= 2; ++$i) {
        $x->call($index);
    }
}

var_dump(test::callCounters);

Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.7: Fatal error: Uncaught Error: Undefined constant test::callCounters in /in/SgYsC:23 Stack trace: #0 {main} thrown in /in/SgYsC on line 23
Process exited with code 255.
Output for 7.0.0 - 7.0.20, 7.1.0 - 7.1.20, 7.2.0 - 7.2.33, 7.3.16 - 7.3.33, 7.4.0 - 7.4.33: Fatal error: Uncaught Error: Undefined class constant 'callCounters' in /in/SgYsC:23 Stack trace: #0 {main} thrown in /in/SgYsC on line 23
Process exited with code 255.

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