Novartis Placement Paper -: PHP Questions With Answers

Novartis Previous Years Solved Sample Placement Papers

1. How many functions does PHP offer for searching and modifying strings using Perl-compatible regular expressions?
   

   A. 10

   B. 7

   C. 8

   D. 9 Answer: Option C

2. Solution: The functions are preg_filter(), preg_grep(), preg_match(), preg_match_all(), preg_quote(), preg_replace(), preg_replace_callback(), and preg_split().
3. Which of the following web servers are required to run the PHP script?
   

   A. Apache and PHP

   B. IIS

   C. XAMPP

   D. Any of the mentioned Answer: Option B

4. Solution: PHP requires a web server to run scripts. IIS, XAMPP, and Apache are suitable, but IIS is highlighted here.
5. What will be the output of the following PHP code snippet?
   <?php
   $url = "[email protected]";
   echo ltrim(strstr($url, "@"),"@");
   ?>
   

   A. [email protected]

   B. [email protected]

   C. phpmcq@

   D. sanfoundry.com Answer: Option D

6. Solution: The strstr() function returns the portion of the string starting from the first occurrence of "@", and ltrim() removes the "@".
7. Which of the following PHP functions can be used to get the current memory usage?
   

   A. memory_get_usage()

   B. memory_get_peak_usage()

   C. get_peak_usage()

   D. get_usage() Answer: Option A

8. Solution: The memory_get_usage() function returns the memory currently allocated to the script. The 'real_usage' parameter can specify whether to include unused pages.
9. Which one of the following PHP functions is used to determine a file’s last access time?
   

   A. filetime()

   B. fileatime()

   C. fileltime()

   D. filectime() Answer: Option B

10. Solution: The fileatime() function returns the last access time of a file in Unix timestamp format or FALSE on error.
11. What will be the output of the following PHP code?
    <?php
    $x = 5;
    $y = 10;
    function fun() {
    $y = $GLOBALS['x'] + $GLOBALS['y'];
    }
    fun();
    echo $y;
    ?>
    

    A. 5

    B. 10

    C. 15

    D. Error Answer: Option B

12. Solution: The $GLOBALS array is used to access global variables, but the global $y is not updated in the function, so it remains 10.
13. PHP recognizes constructors by the name _________
    

    A. function __construct()

    B. function _construct()

    C. classname()

    D. _construct() Answer: Option A

14. Solution: PHP uses the double underscore followed by the "construct" keyword to define constructors. The correct syntax is function __construct().