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<?php function containsOnlyNull(array $array): bool { foreach ($array as $value) { if ($value !== null) { return false; } } return true; } echo 'a: ' . var_export(containsOnlyNull([null,null,null,null,null]), true); // 5 iterations for true outcome echo "\n"; echo 'b: ' . var_export(containsOnlyNull([null,null,1,null,null]), true); // 3 iterations for false outcome
Output for git.master, git.master_jit, rfc.property-hooks
a: true b: false

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