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<?php $a = "0"; var_dump($a != NULL); // "0" != "" var_dump((bool)$a == NULL);// false == false var_dump((bool)$a); // false var_dump($a != NULL && (bool) $a == NULL); var_dump($a == false);
Output for git.master, git.master_jit, rfc.property-hooks
bool(true) bool(true) bool(false) bool(true) bool(true)

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