PHP: in_array() and array_search

PHP

$measure=array("inch"=>1, "foot"=>12, "yard"=>36);

$var=36;

if(in_array($var,$measure)){

  print "The key for ".$var." is ".array_search($var,$measure);

}  

else{

  print $var." not in array";

}  

  

//print "The key for 36 is yard"

//Not Strict

$measure=array("inch"=>1, "foot"=>12, "yard"=>36);

$var="36 cats";

if(in_array($var,$measure)){

  print "The key for ".$var." is ".array_search($var,$measure);

}  

else{

  print $var." not in array";

}  

//print "The key for 36 cats is yard"

//Strict

$measure=array("inch"=>1, "foot"=>12, "yard"=>36);

$var="36 cats";

if(in_array($var,$measure, true)){

  print "The key for ".$var." is ".array_search($var,$measure);

}  

else{

  print $var." not in array";

}  

  

//print "36 cats not in array"