PHP

PHP String and Regular Expression

⛪ Programming Language > PHP

This is the MCQ questions and answers section on "PHP Strings & Regular Expressions" with the explanation for various interview, competitive examination and entrance test. Solved examples with detailed answer description, explanation are given and it would be easy to understand. ➲ PHP String and Regular Expression - Quiz

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

  • A 7
  • B 8
  • C 9
  • D 10

Q 2: Say we have two compare two strings which of the following function/functions can you use?
(i) strcmp()
(ii) strcasecmp()
(iii) strspn()
(iv) strcspn()

  • A (i) and (ii)
  • B (iii) and (iv)
  • C None of the mentioned
  • D All of the mentioned

Q 3: Which one of the following functions will convert a string to all uppercase?

  • A strtoupper()
  • B uppercase()
  • C str_uppercase()
  • D struppercase()

Q 4: What will be the output of the following PHP code? 
< ?php 
    $title = "O'malley wins the heavyweight championship!";
    echo ucwords($title);
?>

  • A O
  • B O
  • C O
  • D o

Q 5: What will be the output of the following PHP code? 
< ?php 
   echo str_pad("Salad", 5)." is good.";
?>

  • A SaladSaladSaladSaladSalad is good
  • B is good SaladSaladSaladSaladSalad
  • C is good Salad
  • D Salad is good

Q 6: Which one of the following functions can be used to concatenate array elements to form a single delimited string?

  • A explode()
  • B implode()
  • C concat()
  • D concatenate()

Q 7: Which one of the following functions finds the last occurrence of a string, returning its numerical position?

  • A strlastpos()
  • B strpos()
  • C strlast()
  • D strrpos()

Q 8: What will be the output of the following PHP code? 
< ?php 
    $url = "nachiketh@example.com";
    echo ltrim(strstr($url, "@"),"@");
?>

  • A nachiketh@example.com
  • B nachiketh
  • C nachiketh@
  • D example.com

Q 9: PHP has long supported two regular expression implementations known as ___ and ___.
(i) Perl
(ii) PEAR
(iii) Pearl
(iv) POSIX

  • A (i) and (ii)
  • B (ii) and (iv)
  • C (i) and (iv)
  • D (ii) and (iii)

Q 10: Which one of the following regular expression matches any string containing zero or one p?

  • A p+
  • B p*
  • C P?
  • D p#

Q 11: [:alpha:] can also be specified as..

  • A [A-Za-z0-9]
  • B [A-za-z]
  • C [A-z]
  • D [a-z]

Q 12: How many functions does PHP offer for searching strings using POSIX style regular expression?

  • A 7
  • B 8
  • C 9
  • D 10

Q 13: POSIX implementation was deprecated in which version of PHP?

  • A PHP 4
  • B PHP 5
  • C PHP 5.2
  • D PHP 5.3

Q 14: POSIX stands for

  • A Portable Operating System Interface for Unix
  • B Portable Operating System Interface for Linux
  • C Portative Operating System Interface for Unix
  • D Portative Operating System Interface for Linux