array_key_exists : Associative Array : Data Structure PHP Source Code


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array_key_exists



<?php
   $state["Delaware""December 7, 1787";
   $state["Pennsylvania""December 12, 1787";
   $state["Ohio""March 1, 1803";
   if (array_key_exists("Ohio", $state)) echo "Ohio joined the Union on $state[Ohio]";
?>

           
       



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