Hello folks! welcome back to a new edition of our tutorial on PHP. In this tutorial guide, we are going to be studying about the PHP hash_copy() Function.
The PHP hash_copy() function is used to copy the hashing context generated from hash_init().
The PHP hash_copy() function is used to copy the hashing context generated from hash_init().
Syntax
Following below is the syntax to use this function -
hash_copy ( HashContext $context ) : HashContext
READ: PHP | algos() Function
Parameter Details
Sr.No | Parameter & Description |
---|---|
1 | HashContext context The hash context that you get using hash_init(). |
Return Value
It returns a copy of hash context. The hash context can be used along with other hash function like hash_update_file(), hash_final(), hash_update() and hash_update_stream().
PHP Version
This built-in PHP function works from PHP version greater than 5.3.0.
Example1
Working with the built-in PHP hash_copy() and hash_init() functions -
<?php $hash_context = hash_init("md5"); hash_update($hash_context, "Welcome To Webdesigntutorialz"); $hash_copy= hash_copy($hash_context); echo hash_final($hash_context); echo "<br/>"; hash_update($hash_copy, "Welcome To Webdesigntutorialz"); echo hash_final($hash_copy); ?>
Output
When the above code is executed, it will produce the following result -
380d3ca1b0ab972f207209c076895310<br/>621058f8d42e78586b987c7b5233dc77
Example2
Working with the hash_copy() and sha256
<?php $hash_context = hash_init("sha256"); hash_update($hash_context, "Welcome To Webdesigntutorialz"); $hash_copy = hash_copy($hash_context); hash_update($hash_copy, "Welcome To Webdesigntutorialz"); echo hash_final($hash_copy); ?>
Output
When the above code is executed, it will produce the following result -
c37c7726bd39bab917ab8eb2143f914f9c37937bc48fb3b3ef11860867f93c20
READ: PHP | hash() Function
Alright guys! This is where we are rounding up for this tutorial post. In our next tutorial, we will be studying about the hash_equals() Function.
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