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run code in 200+ php & hhvm versions
Bugs & Features
<?php var_dump(is_string(''), is_string(' ')); # true true $v = ''; var_dump(isset($v)); $v[] = 1; var_dump($v);
Output for 7.1.0 - 7.3.0rc4
bool(true) bool(true) bool(true) Fatal error: Uncaught Error: [] operator not supported for strings in /in/MQXAC:7 Stack trace: #0 {main} thrown in /in/MQXAC on line 7
Process exited with code 255.
Output for 4.3.0 - 7.0.20
bool(true) bool(true) bool(true) array(1) { [0]=> int(1) }