Substring replacements:
Syntax:
substr_replace($existing_string,$overwritting string,$int_start,$int_length);
Example:
substr_replace(‘my dog’,’cat’,3,3); my cat
substr_replace(“my\ndog”,”cat”,3,3); my
cat // since \n is used, so cat displayed in next line.
Program:
<?php
print substr_replace('5777 7777 7777 5555','xxxx',0,14);
?>
Output:
Thanks for reading this post…………!!!