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Explain PHP string functions

Mumbai University > Information Technology > Sem 4 > Web Programming

Marks: 5M

Year: Dec 2014, May 2014

1 Answer
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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

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