strpos() With Out-Of-Range Offset Is A Fatal Error¶
Requesting a large offset, beyond the size of the searched string, leads to a Fatal error in PHP 8.0 and more recent.
Until then, it was a warning.
This error message is shared by several PHP native and extension functions, namely mbstring and iconv: strpos(), strrpos(), stripos(), strripos(), mb_strpos(), mb_strrpos(), mb_stripos(), mb_strripos(), iconv_strpos and iconv_strrpos.
PHP code¶
<?php
strpos('abc', 'b', 6);
Before¶
PHP Warning: strpos(): Offset not contained in string in /codes/strpos-and-offset.php on line 3
Warning: strpos(): Offset not contained in string in /codes/strpos-and-offset.php on line 3
After¶
PHP Fatal error: Uncaught ValueError: strpos(): Argument #3 ($offset) must be contained in argument #1 ($haystack) in /codes/strpos-and-offset.php:3
Stack trace:
#0 /codes/strpos-and-offset.php(3): strpos('abc', 'b', 6)
#1 {main}
thrown in /codes/strpos-and-offset.php on line 3
Fatal error: Uncaught ValueError: strpos(): Argument #3 ($offset) must be contained in argument #1 ($haystack) in /codes/strpos-and-offset.php:3
Stack trace:
#0 /codes/strpos-and-offset.php(3): strpos('abc', 'b', 6)
#1 {main}
thrown in /codes/strpos-and-offset.php on line 3
PHP version change¶
This behavior changed in 8.0
