PHP variables are preceded by __________ 

  Which function sets the file filename last-modified and last-accessed times?

PHP recognizes constructors by the name _________

How many Perl-compatible regular expression (PCRE) functions does PHP offer for searching and modifying strings?

How many times will the following code print “Learn at Abekus”?

<?php

$nums=[1,0,5,4];

for($x=0;$x<4;$x++){

$nums[$x]=$nums[$x]*2;

}

echo $nums[2];

?>

Which of the following is/are an exception?

 i) OutOfBoundException

 ii) OutOfRangeException

 iii) OverflowException

 iv) UnderflowException 

What will be the output of the following PHP code?

Which of the following variables does PHP use to authenticate a user?

i) $_SERVER['PHP_AUTH_USER'].
ii) $_SERVER['PHP_AUTH_USERS'].
iii) $_SERVER['PHP_AUTH_PU'].
iv) $_SERVER['PHP_AUTH_PW'].

Which of the following properties does not describe a validating filter?

What will be the output of the following PHP code?

1. <?php
2. $var=300;
3. $int_options = array("options"=>array ("min_range"=>0, "max_range"=>256));
4. if (!filter_var($var, FILTER_VALIDATE_INT, $int_options))
5. echo("Integer is not valid");
6. else
7. echo("Integer is valid");
8. ?>