Program 1
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<?php
// $array1=array("Mon","Tue","Wed","Sat","Mon","Sat");
// $array2=array("Mon","Wed","Thus","Fri");
// print_r($array3);
// $array3=array_diff($array2,$array1);
// print_r($array3);
$array1=array("x"=>"Mon","y"=>"Tue","z"=>"Wed","k"=>"Sat");
// $array2=array("x"=>"Mon","r"=>"Wed","t"=>"Thus","k"=>"Fri");
//$array3=array_diff($array1,$array2);
//$array3=array_diff_key($array1,$array2);
// $array3=array_diff_assoc($array1,$array2);
// print_r($array3);
?>
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