PHP : substr_replace() function
Description
The substr_replace() function is used to replace a part of a string with another string.
Version
(PHP 4 and above)
Syntax
substr_replace(string_name, replacement_string, start_pos, length)
Parameters
| Name | Description | Required / Optional |
Type |
|---|---|---|---|
| string_name | The input string. | Required | Mixed* |
| replacement_string | The replacement string. | Required | String |
| start_pos | Refers to the position of the string to start cutting - A positive number : Start at the specified position from the string. A negative number : Start at a specified position from the end of the string. |
Required | Integer |
| length | Length of the replacing string. A positive number : Start at the specified position from the string. A negative number : Start at a specified position from the end of the string. |
Optional | Integer |
Return value
The result string is returned. If string1 is an array then array is returned.
Value Type : Mixed.
*Mixed : Mixed indicates that a parameter may accept multiple (but not necessarily all) types.
Pictorial Presentation
Example :
<?php $string1="Welcome to w3resource.com"; echo $string1; echo '<br>'; echo substr_replace($string1,'NEW',0); echo '<br>'; echo substr_replace($string1,'NEW',5); echo '<br>'; echo substr_replace($string1,'NEW',0,0); echo '<br>'; echo substr_replace($string1,'NEW',8,-2); echo '<br>'; echo substr_replace($string1,'NEW',-6,-1); echo '<br>'; echo substr_replace($string1,' ',1,-1); ?>
Output :
Welcome to w3resource.com
NEW
WelcoNEW
NEWWelcome to w3resource.com
Welcome NEWom
Welcome to w3resourNEWm
W m
View the example in the browser
See also
