The substr_replace() function is used to replace the part of string with another string.
Syntax
substr_replace(str,replacement,begin,len)
Parameters
str − The string to check
replacement − The string to insert
begin − The position from where the replacement begins −
If begin is a positive number: Begin replacing at the specified position in the string
If begin is a n number: - Begin replacing at the specified position from the end of the string
if begin is 0 - Begin replacing at the first character in the string.
len − The number of characters to be replaced. The default is the same length as the string.
If len is a positive number - The length of string to be replaced
If len is a negative number - How many characters should be left at end of string after replacing
If len is 0 - Insert instead of replace.
Return
The substr_replace() function returns the replaced string.
Example
The following is an example −
<?php
echo substr_replace("Demo text","word",5);
?>Output
The following is the output −
Demo word
Example
Let us see another example to replace a string from the end of the string −
<?php
echo substr_replace("Demo text","word",-5);
?>Output
The following is the output −
Demoword