What will happen in this function call?

    <?php
    function calc($price, $tax)    
    {
        $total = $price + $tax;
    }
    $pricetag = 15;
    $taxtag = 3;
    calc($pricetag, $taxtag);    
    ?>

What will be the output of the following PHP code?

  <?php
    $score = 1234;
    $scoreboard = (array) $score;
    echo $scoreboard[0];
    ?>

What will be the output of the following PHP code?

 <?php
    $op2 = "blabla";
    function foo($op1)
    {
        echo $op1;
        echo $op2;
    }
    foo("hello");
    ?>

What will be the output of the following PHP code?

 <?php
    $user = array("Ashley", "Bale", "Shrek", "Blank");
    for ($x=0; $x < count($user); $x++)    {
        if ($user[$x] == "Shrek") continue;
            printf ($user[$x]); 
    }
    ?>

Which of the following are valid function names?
i) function()
ii) €()
iii) .function()
iv) $function()

Which version of PHP introduced Try/catch Exception?

Which one of the following property scopes is not supported by PHP?

 Which one of the following is the right way to call a class constant, given that the class is mathFunction?

 Which function is used to remove all HTML tags from a string passed to a form?

6. Which of the looping statements is/are supported by PHP?
i) for loop
ii) while loop
iii) do-while loop
iv) foreach loop

What will be the output of the following PHP code?

<?php
    echo lcfirst("welcome to TechEpi");
    ?>

To validate an e-mail address, which flag is to be passed to the function filter_var()?

PHP files have a default file extension of..

Which of the following PHP functions can be used to get the current memory usage?