PHP verifies the accuracy of IP address input: array value verification

I have seen some methods of IP address verification, most of which use the regular expression \ D for simple verification. Imagine what if I enter an IP address such as 258.689.125.4 ??

I wrote an IP address verification method (without considering efficiency issues) and shared it with you. I am eager to share some ideas.

 

<? PHP
 $ String = '1970. 168.1.258 ';
 $ Array = Explode ('.', $ String );
 Foreach ( $ Array   As   $ Value ){
 If ( $ Value <0 | $ Value > 255 ){
 Echo "The IP address you entered is incorrect. Please enter it again ";
 Return ;
}
}
 Echo   $ Array [0] * POW (255, 3) + $ Array [1] * POW (255, 2) + $ Array [2] * POW (255, 1) + $ Array [3];
?>