PHP 4, PHP 5, PHP 7, PHP 8
strrpos - Find the position of the last occurrence of a substring in a string
Strrpos Online Tool
Code Examples

Example #1 Searching with offsets

Result: int(0) bool(false) int(27) bool(false) int(17) bool(false) int(29)
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Example #2 Checking if a needle is in the haystack

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Example #3 of strrpos

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Function strrpos:

Strings Functions

Most used PHP functions