Bug #64941 [Opn->Nab]: in_array fails to find index

Edit report at https://bugs.php.net/bug.php?id=64941&edit=1 ID: 64941 Updated by: nikic@php.net Reported by: mclaughlinm at byui dot edu Summary: in_array fails to find index -Status: Open +Status: Not a bug Type: Bug Package: Arrays related Operating System: Windows PHP Version: 5.4.15 Block user comment: N Private report: N New Comment: Sorry, but your problem does not imply a bug in PHP itself. For a list of more appropriate places to ask for help using PHP, please visit http://www.php.net/support.php as this bug system is not the appropriate forum for asking support questions. Due to the volume of reports we can not explain in detail here why your report is not a bug. The support channels will be able to provide an explanation for you. Thank you for your interest in PHP. in_array looks for array values, not keys. You are looking for either isset() or array_key_exists(). Previous Comments: ------------------------------------------------------------------------ [2013-05-29 06:44:27] mclaughlinm at byui dot edu Description: ------------ --- From manual page: http://www.php.net/function.in-array#refsect1-function.in-array-returnvalues --- Tested in 5.3 and 5.4 with the results that a numeric and string index aren't found in an array. Returns false when it should be true. There is no "Undefined index" error raised. Test script: --------------- testcase1.php ============= <?php $musketeers = array("Noble"=>"Athos","Priest"=>"Aramis" ,"Dandy"=>"Porthos","Hero"=>"d'Artagnan"); $search = "Dandy"; if (in_array($search,$musketeers)) print "[Is Found] [".$musketeers[$search]."]\n"; else print "[Not Found][".$musketeers[$search]."]\n"; ?> testcase2.php ============= <?php $musketeers = array("Athos","Aramis","Porthos","d'Artagnan"); $search = "2"; if (in_array($search,$musketeers)) print "[Is Found] [".$musketeers[$search]."]\n"; else print "[Not Found][".$musketeers[$search]."]\n"; ?> Expected result: ---------------- It should return true when finding the index value in the array. Actual result: -------------- Doesn't return true when finding the index value in the array, but doesn't raise an Undefined index error. ------------------------------------------------------------------------ -- Edit this bug report at https://bugs.php.net/bug.php?id=64941&edit=1