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<?php $a = []; $a['9223372036854775807'] = 'a'; $a['9223372036854775808'] = 'b'; var_dump($a); var_dump(PHP_INT_MAX);
Output for git.master, git.master_jit, rfc.property-hooks
array(2) { [9223372036854775807]=> string(1) "a" ["9223372036854775808"]=> string(1) "b" } int(9223372036854775807)

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