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PHP program that multiplies corresponding elements of two given lists



<?php

function multiply_two_lists($x, $y)
 {
    $a = explode(' ',trim($x));
    $b = explode(' ',trim($y));
    foreach($a as $key=>$value) 
 {
        $output[$key] = $a[$key]*$b[$key];
  }
    return implode(' ',$output);
 }
echo multiply_two_lists(("10 12 3"), ("1 3 3"))."\n";
?>
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