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<?php
$a=array("Volvo"=>"XC90","BMW"=>"X5");
if (key_exists("Toyota",$a))
&nbsp;&nbsp;  {
&nbsp;&nbsp;  echo "Key exists!";
&nbsp;&nbsp;  }
else
&nbsp;&nbsp;  {
&nbsp;&nbsp;  echo "Key does not exist!";
&nbsp;&nbsp;  }
?>
 
 
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