PHP crc32() function

by Online Tutorials Library July 22, 2022

PHP crc32() Function

PHP crc32() function is important string function, which is used to calculate the crc32( cyclic redundancy checksum ) polynomial of a string. It can be used to validate data integrity.

Note : you are using crc32() function then, you must have to use %u formatter for the printf() or sprintf() function. If you are not using then it will return incorrect or negative value.

Syntax:

Parameter	Description	Required/Optional
string	The string to be calculated.	Required

Example 1

  <?php  $checksum = crc32(“Hello how are you?.”);  printf(“%un”, $checksum);  ?>  

Output:

2454994420

Example 2

  <?php  $str =”Hello TutorAspire “;  echo “Your string value is : “.$str.”<br>”;  $str =crc32($str);  printf(“%un”, $str);  ?>  

Output:

Your string value is : Hello TutorAspire 1303530391

Example 3

  <?php  $str = crc32(“Hello TutorAspire “);  echo ‘Without %u: ‘.$str.”<br>”;  echo ‘With %u: ‘;  printf(“%u”,$str);  ?>  

Output:

Without %u: 1303530391  With %u: 1303530391

Next TopicPHP String

addcslashes()addslashes()ajax array bin2hex()chop()date example file functions mysql oop php regex session string time tutorial xml

PHP crc32() function

PHP crc32() Function

Note : you are using crc32() function then, you must have to use %u formatter for the printf() or sprintf() function. If you are not using then it will return incorrect or negative value.

Syntax:

Example 1

Example 2

Example 3

JavaScript TypedArray subarray() Method

PHP str_replace() Function

You may also like