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    PHP crc32() Function

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    PHP Crc32() Function

    The PHP crc32() function is used to get the 32-bit cyclic redundancy checksum code of the given input string. To convert the given input string into a 32-bit cyclic redundancy checksum code this crc32() function uses the CRC32 algorithm.

    Syntax :

    crc32($string)

    The $string is the given input string which will be passed to the function as a parameter.

    We use the "%u" & printf to make sure that the output which we get is correct because sometimes the output could be in negative so it's better to use the crc32() function with "%u".

    Let's see some examples of this crc32() function:

    <html>
<body>
<?php
$str = crc32("PHPTPOINT");
echo $str;
?>  
</body>
</html>
    Output:
    1547364703

    Example 2

    <html>
<body>
<?php
$str = "PHP is a server side scripting language. that is used to develop Static websites or Dynamic websites or Web applications";
echo crc32($str);
?>  
</body>
</html>
    Output:
    3727077676

    Example 3

    <html>
<body>

<?php
$str = crc32("We love PHP !!!");

echo "without %u:".$str."<br>";
echo "with %u:";
printf ("%u",$str);
?> 

</body>
</html>
    Output:
    without %u:577534530
    with %u:577534530
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