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run code in 150+ php & hhvm versions
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<?php $a = array ( 0 => 'test,test,,,,test,1,123566', 1 => 'test,test,,,,test,1,123566', 2 => 'test,test,,,,test,1,123566', 3 => 'test,test,,,,test,1,123566', ); // $acount = array_count_values($a); $diff = ($a[0] === $a[1]); var_dump(array_count_values($a));
based on irtff
Output for 4.3.0 - 5.6.28, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0
array(1) { ["test,test,,,,test,1,123566"]=> int(4) }