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<?php var_dump(strpos('foo', '')); var_dump(strpos('', 'foo')); var_dump(strpos('', ''));
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.27, 8.2.0 - 8.2.17, 8.3.0 - 8.3.4
int(0) bool(false) int(0)
Output for 5.3.22 - 5.3.29, 5.4.12 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.40, 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.34, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33
Warning: strpos(): Empty needle in /in/lADCh on line 3 bool(false) bool(false) Warning: strpos(): Empty needle in /in/lADCh on line 7 bool(false)
Output for 5.2.5 - 5.2.17, 5.3.0 - 5.3.21, 5.4.0 - 5.4.11
Warning: strpos(): Empty delimiter in /in/lADCh on line 3 bool(false) bool(false) Warning: strpos(): Empty delimiter in /in/lADCh on line 7 bool(false)
Output for 4.3.2 - 4.3.11, 4.4.0 - 4.4.9, 5.0.0 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.4
Warning: strpos(): Empty delimiter. in /in/lADCh on line 3 bool(false) bool(false) Warning: strpos(): Empty delimiter. in /in/lADCh on line 7 bool(false)
Output for 4.3.0 - 4.3.1
Warning: strpos() [http://www.php.net/function.strpos]: Empty delimiter. in /in/lADCh on line 3 bool(false) bool(false) Warning: strpos() [http://www.php.net/function.strpos]: Empty delimiter. in /in/lADCh on line 7 bool(false)

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