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<?php $arr = array(0, '0', NULL, 'abc', ''); foreach($arr as $key) { var_dump($key); echo ':' . strlen($key); echo PHP_EOL; }
Output for git.master, git.master_jit, rfc.property-hooks
int(0) :1 string(1) "0" :1 NULL Deprecated: strlen(): Passing null to parameter #1 ($string) of type string is deprecated in /in/HG5iT on line 7 :0 string(3) "abc" :3 string(0) "" :0

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