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PHP Video Tutorials for Beginners
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  • Datatypes in PHP and String Functions - Tutorial 3

    @narendra.arora
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    Datatypes supported by PHP

    1. String
    2. Integer
    3. Floating point
    4. Boolean
    5. Array
    6. Object
    7. NULL
    8. Resource

    String Functions

    Strlen() : Returns the length of a string (number of characters).

    1. <?php
    2. echo strlen("Hello world!"); // outputs 12
    3. ?>

    Strrev() : reverses a string:

    1. <?php
    2. echo strrev("Hello world!"); // outputs !dlrow olleH
    3. ?>

    Strpos() : searches for a specific text within a string. If a match is found, the function returns the character position of the first match. If no match is found, it will return FALSE.

    1. <?php
    2. echo strpos("Hello world!", "world"); // outputs 6
    3. ?>

    str_replace() : Replaces some characters with some other characters in a string.

    1. <?php
    2. echo str_replace("world", "Dolly", "Hello world!"); // outputs Hello Dolly!
    3. ?>
    php Datatypes in PHP String functions in PHP str_replace in PHP strrev in PHP strlen in PHP
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