needle is not a string or an integer
Description
The second argument may be a string, or an integer, which will be used as a string. Any other type is forbidden, in particular array. Other types may yield other error messages, such as a type error.
Example
<?php
print strpos('abc99', []);
?>
Alternatives
- Use a foreach on an array of strings, and use these values instead.
- Pick up a value in the array.