Zend PHP 5.3 Certification Exam


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  • Question 23/36

    Consider the following PHP script, used to apply a callback function to every element of an array.

    
    <?php
        function square($val)
        {
            return pow($val2);
        }
    
        $arr = array(
            1234
        );
    
        /** line **/
    
        $i 0;
        foreach ($squares as $value) {
            if ($i++ > 0) {
                echo ".";
            }
    
            echo $value;
        }
    ?>
    
    
    What line of code should be substituted with /** line **/ to achieve an output of 1.4.9.16?