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Type Hinting was introduced in which version of PHP

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Type Hinting was introduced in which version of PHP?

Answer & Solution
Correct Answer: Option B
Type hinting gives you the ability to force parameters to be objects of certain class or to be arrays. PHP 5 introduced this feature.
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Which one of the following is the right way of defining a function in PHP?
A. function { function body } B. data type functionName(parameters) { function body } C. functionName(parameters) { function body } D. function fumctionName(parameters) { function body }
Type Hinting was introduced in which version of PHP?
A. PHP 4 B. PHP 5 C. PHP 5.3 D. PHP 6
What will happen in this function call? 
<?php
function calc($price, $tax)	
{
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}
$pricetag = 15;
$taxtag = 3;
calc($pricetag, $taxtag);	
?>
A. Call By Value B. Call By Reference C. Default Argument Value D. Type Hinting
What will be the output of the following PHP code? 
<?php
function calc($price, $tax="")
{
    $total = $price + ($price * $tax);
    echo "$total"; 
}
calc(42);	
?>
A. Error B. 0 C. 42 D. 84
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