PHP similar to JS indexof and LastIndexOf method: Strpos () Strrpos () ____js

PHP Strpos () function

PHP String function definition and usage

The Strpos () function returns the position where the string first appears in another string.

If the string is not found, it returns false. Grammar

Strpos (String,find,start)

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

Tips and Comments

Note: This function is sensitive to case sensitivity. Use the Stripos () function if you want to search for case insensitive. Example

<?php
Echo strpos ("Hello world!", "Wo");
? >

Output:

6

PHP Strripos () function

PHP String function definition and usage

The Strrpos () function finds the last occurrence of a string in another string.

If successful, the position is returned, or false. Grammar

Strrpos (String,find,start)

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

Tips and Comments

Note: This function is not sensitive to case. For case sensitive lookups, use Strrpos (). Example

<?php
Echo strripos ("Hello world!", "WO");
? >

Output:

6