PHP Skill Test

$a .= "a";
$a .= "b";
$a .= "c";

1. What is the value of $a?

$a = 4;
for ($b = 0; $b <= $a; $b++) {
    $c++;
}

2. What is the value of $c?

$a[] = "a";
$a[] = "b";
$a[] = "c";

3. What is the value of $a[2]?

$a = 200.5;
$b = 2005;
$c = "2005";

4. Which of the above variables' type is integer?

$

$a = '1';
$b = &$a;
$b = "2$a";

5. What is the value of $a?

$a = "abc";
$b = substr($a, 0, -1);

6. What is the value of $b?

$a = true;
$b = "true";
$c[] = "true";

7. Which of the above variables' type is string?

$

$a = "b";
$b = "a";

8. What is the value of ${$b}?

$a = array("a","b","c");
foreach ($a as $b){
    $c++;
}

9. What is the value of $c?

$a = "0";
$b = "0";
if ($a != "1" && $b == "1" || $a != "0" || $b != "1" ){
    $d = "0";
}else{
    $d = "1";
}

10. What is the value of $d?

$a = "post_processed_string";                
$b = array("post_", "_");
$c = array("", " ");
$d = ucwords(str_replace($b,$c,$a));

11. What is the value of $d?

$a = "<tt>some</tt><b>html</b>";
preg_match("/<\w?>(\w*?)<\/\w?>/",$a,$b);

12. What is the value of $b[1]?

How many mistakes do you estimate you made?

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