Php strrpos () and strripos () Functions

Strripos () function

Definition and usage
The strripos () function is used to locate the last occurrence of a string in another string.
If the operation is successful, the location is returned. Otherwise, false is returned.

Syntax
Strrpos (string, find, start)

Parameters	Description
String	Required. Specifies the string to be searched.
Find	Required. Specifies the characters to be searched.
Start	Optional. Specifies the location where the search starts.

Tips and comments
Note: This function is case insensitive.

Example:
 Copy codeThe Code is as follows:
<? Php
Echo strripos ("Hello world! "," WO ");
?>
 
Output: 6

Strrpos () function

Definition and usage
The strrpos () function is used to locate the last occurrence of a string in another string.

If the operation is successful, the location is returned. Otherwise, false is returned.

Syntax
Strrpos (string, find, start)

Parameters	Description
String	Required. Specifies the string to be searched.
Find	Required. Specifies the characters to be searched.
Start	Optional. Specifies the location where the search starts.

Tips and comments
Note: This function is case sensitive. Use strripos () to perform case-insensitive searches ().

Example
Copy codeThe Code is as follows:
<? Php
Echo strrpos ("Hello world! "," Wo ");
?>

Output:
6

Use strrpos to verify whether the link is an http Link
Copy codeThe Code is as follows:
<? Php
$ Url = "http://www.baidu.com ";
If (strrpos ($ url, 'HTTP ://')! = 0)
Echo "link for http ";
?>