Online PHP editor | perf for Gb7jO

<?php // string, null, bool, float, largest specified previous index function isIndexedArray($array) { return !(bool)count(array_filter(array_keys($array), 'is_string')); } var_dump(isIndexedArray('a')); // false var_dump(isIndexedArray(NULL)); // false var_dump(isSequentialArray([])); // true/undefined var_dump(isSequentialArray(['a'])); // true var_dump(isSequentialArray(['a' => 1])); // false array(1=>'a',2=>'b') empty string ['a' => 'a']; [1 => 'a']; [1,2,null,4] var_dump(isSequentialArray(array(0 => 'a', 1 => 'b'))); // true var_dump(isSequentialArray(array(0 => 'a', 5 => 'b'))); // true var_dump(isSequentialArray(array('a', 'b', 'c'))); // false var_dump(isSequentialArray(array("0" => 'a', "1" => 'b', "2" => 'c'))); // false var_dump(isSequentialArray(array("1" => 'a', "0" => 'b', "2" => 'c'))); // true var_dump(isSequentialArray(array("a" => 'a', "b" => 'b', "c" => 'c'))); // true

Version	System time (s)	User time (s)	Memory (MiB)
5.6.15	0.007	0.047	18.17
5.6.14	0.007	0.037	18.18
5.6.13	0.003	0.083	18.21
5.6.12	0.013	0.080	20.98
5.6.11	0.007	0.057	20.98
5.6.10	0.007	0.043	20.98
5.6.9	0.013	0.077	21.08
5.6.8	0.000	0.090	20.39
5.5.30	0.007	0.047	18.02
5.5.29	0.003	0.070	18.07
5.5.28	0.010	0.080	20.85
5.5.27	0.017	0.073	20.98
5.5.26	0.013	0.073	20.73
5.5.25	0.007	0.040	20.59
5.5.24	0.043	0.060	20.23