Mumbai University > Information Technology > Sem 4 > Web Programming

Marks: 5M

Year: Dec 2014, May 2014

PHP String Functions are:

• strlen(string 1) : It finds total number of characters in the string

  Example:

  <?php
  $s=”Friend”;
          echo $s
  ?>
  

  Output: 6

• strcmp(string 1, string 2) : It compares the two strings. In this, function returns 0 when both the strings are equal, function returns value >0 when string 1 is greater than string 2 and function returns <0 when string 1 is less than string 2.

  Example:

  <?php
   echo
  strcmp(“PHP”,”PHP”);
  ?>
  

  Output: 0

• strtolower(string 1) : This function converts the characters in string 1 to lower case.

  Example:

  <?php
  Echo strtolower(“PHP”);
  ?>
  

  Output: php

• strtoupper(string1): This function converts the characters in string 1 to upper case. Example: Output: PHP ● trim(string1): This function eliminates the white space from both the ends of strings.

  Example :

  <?php
  $str=”PHP”;
           Echo “\lth3\gt:$str</h3>”;
   Echo “<h3>:”.trim($str);
   Echo “</h3>”
   ?>
  

  Output- : PHP

  : PHP