search vowels from name in php

 <!DOCTYPE html>

<html>

<body>


<?php

$str = "Rupesh sharma";

$counter = 0;


for($i=0; $i<=strlen($str); $i++){


 if(in_array($str[$i],['a', 'e' , 'i','o','u'])){

     $counter++;

 }

     


 

}


echo $counter;

?>


</body>

</html>


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