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<?php $a = ' 001'; $b = '1'; var_dump($a == $b); var_dump(0 === strcmp($a, $b));
Output for 7.2.0 - 7.2.33, 7.3.0 - 7.3.22, 7.4.0 - 7.4.10, 8.0.0alpha1 - beta3
bool(true) bool(false)