PHP Strrpos () and Strripos () functions _php Tutorial

Strripos () function

Definition and usage
The Strripos () function finds the position of the last occurrence of a string in another string.
If successful, returns the position, otherwise false.

Grammar
Strrpos (String,find,start)

Parameters	Description
String	Necessary. Specifies the string to be searched.
Find	Necessary. Specifies the character to find.
Start	Optional. Specify where to start the search.

Hints and Notes
Note: The function is not case sensitive.

Example:
Copy the Code code as follows:
Echo Strripos ("Hello world!", "WO");
?>

Output: 6

Strrpos () function

Definition and usage
The Strrpos () function finds the position of the last occurrence of a string in another string.

If successful, returns the position, otherwise false.

Grammar
Strrpos (String,find,start)

Parameters	Description
String	Necessary. Specifies the string to be searched.
Find	Necessary. Specifies the character to find.
Start	Optional. Specify where to start the search.

Hints and notes
Note: The function is case-sensitive. For case-insensitive lookups, use Strripos ().

Example
Copy the Code code as follows:
Echo Strrpos ("Hello world!", "Wo");
?>

Output:
6

Verify that the link is a link to the HTTP protocol with Strrpos
Copy the Code code as follows:
$url = "http://www.baidu.com";
if (Strrpos ($url, '/http ')!== 0)
echo "link is a link to the HTTP protocol";
?>

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