PHP interview Questions

Q:-51. What is the value of $a in the following program?

$x ="5 Coin"
$a=$a+20;
Echo $a;

Output : 25

Q:-52. How to delete a file from file system using PHP?

Unlink() function deletes the given file from file system.

Q:-53. What is mean by an associative array in PHP?

Associative arrays are also an array with string keys.

Q:-54. What is the use of rand() function in PHP?

rand () function is basically used to generate random number in PHP.

Q:-55. How to find the length of the string in PHP?

Strlen() function is used to count the length of the string.

Q:-56. Why we use $_REQUEST super global array in PHP?

We use $_REQUEST super global array in PHP to collect the data value from $_GET, $_POST and $_COOKIES variable.

Q:-57. What is the output of the following program?

Echo 1<2;
Output: 1

Q:-58. What is Apache Configuration file typically called?

The name of the Apache Configuration file named is Httpd.conf

Q:-59. Give the some example of the super global array in PHP?

$_GET, $_POST, $_SESSION, $_COOKIES, $_SERVER, $_REQUEST

Q:-60. How would you determine the size of a file in PHP?

The filesize() function return a file size in bytes

Q:-61. What are the encryption functions in PHP?

crypt() function and md5()function.