PHP Technical Question

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1. Write a program of factorials in php?

2. In which statement output is assigned to a string rather than output directly to

standard output?

a) Strecho()

b) String()

c) Seco()

d) Sprint()

3. Which function Returns the time at which the file was last changed as a UNIX

timestamp?

a) fileatime()

b) filectime()

c) filemtime()

d) fileitime()

4. Which is a line placed at the top of the script itself that tells the computer where to

find the PHP engine?

a) Data

b) Bin

c) Shebang

d) None of the above

5. Which is used for reading user input?

a) Echo

b) Strerr

c) Stdin

d) STDIN

6. PHP supports an alternative to the C++-style single-line syntax, known as ______?

a) Short circuit

b) Java syntax

c) Native syntax

d) Shell syntax


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7. Which support offered users the ability to use PHP in conjunction with Microsoft’s IIS

Web server as an ISAPI module?

a) COM/DOM

b) ISAPI

c) Encryption

d) Java

8. Which serves as the lookup facility for retrieving its counterpart?

a) Value

b) Key

c) Boolean

d) None of the above

9. How can we check the value of a given variable is alphanumeric?

a) ctype_alnum()

b) ctype_alphanumeric()

c) alnum()

d) alphanumeric()

10. What is the value of $a ?

$a .= "a";

$a .= "b";

$a .= "c";

11. What is the value of $c ?

$a = 4;

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

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

$a[] = "a";

$a[] = "b";

$a[] = "c";


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13. Which of the above variable's type is integer?

$a = 200.5;

$b = 2005;

$c = "2005";

14. What is the value of $a ?

$a = '1';

$b = &$a;

$b = "2$a";

15. What is the value of $b ?

$a = "abc";

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

16. Which of the above variable's type is string?

$a = true;

$b = "true";

$c[] = "true";

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

$a = "b";

$b = "a";

18. What is the value of $c ?

$a = array ("a","b","c");

foreach ($a as $b){ $c++; }

19. What is the value of $d ?

$a = "0";

$b = "0";

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

else{ $d = "1"; }


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20. What is the value of $d ?

$a = "post_processed_string";

$b = array("post_", "_");

$c = array("", " ");

$d = ucwords(str_replace($b,$c,$a));

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

$a = "<tt>some</tt><b>html</b>";

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

PHP Technical Question

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