php strrpos() and strripos() functions_PHP tutorial

strripos() function

Definition and Usage
strripos() function finds the last occurrence of a string within another string.
Returns the position if successful, false otherwise.

Syntax
strrpos(string,find,start)

参数	描述
string	必需。规定被搜索的字符串。
find	必需。规定要查找的字符。
start	可选。规定开始搜索的位置。

Tips and Notes
Note: This function is not case sensitive.

Example:

Copy code The code is as follows:

echo strripos("Hello world!","WO");
?>

Output: 6

strrpos() function

Definition and Usage
strrpos() function finds the last occurrence of a string in another string.

Returns the position if successful, false otherwise.

Syntax
strrpos(string,find,start)

参数	描述
string	必需。规定被搜索的字符串。
find	必需。规定要查找的字符。
start	可选。规定开始搜索的位置。

Tips and Notes
Note: This function is case sensitive. For case-insensitive searches, use strripos().

Example

Copy code The code is as follows:

echo strrpos("Hello world! ","wo");
?>

Output:
6

Use strrpos to verify whether the link is a link of http protocol

Copy the code The code is as follows:

$url="http://www.baidu.com";
if (strrpos($url, 'http://') !== 0)
echo "The link is a link with http protocol ";
?>

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