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<?php $text = "01-3-567-90"; var_dump(strrpos($text, "-") , mb_strrpos($text, "-")); var_dump(strrpos($text, "-", 7) , mb_strrpos($text, "-", 7)); var_dump(strrpos($text, "-", -4), mb_strrpos($text, "-", -4));
Output for 5.2.4 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 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 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
int(8) int(8) int(8) int(8) int(4) int(4)
Output for 5.2.0 - 5.2.3
int(8) int(8) int(8) int(8) int(4) int(8)
Output for 5.0.0 - 5.0.5, 5.1.0 - 5.1.6
int(8) int(8) Warning: mb_strrpos(): Unknown encoding "7" in /in/mCdGh on line 4 int(8) bool(false) Warning: mb_strrpos(): Unknown encoding "-4" in /in/mCdGh on line 5 int(4) bool(false)
Output for 4.3.2 - 4.3.11, 4.4.0 - 4.4.9
int(8) int(8) Warning: Wrong parameter count for strrpos() in /in/mCdGh on line 4 Warning: mb_strrpos(): Unknown encoding "7" in /in/mCdGh on line 4 NULL bool(false) Warning: Wrong parameter count for strrpos() in /in/mCdGh on line 5 Warning: mb_strrpos(): Unknown encoding "-4" in /in/mCdGh on line 5 NULL bool(false)
Output for 4.3.0 - 4.3.1
int(8) int(8) Warning: Wrong parameter count for strrpos() in /in/mCdGh on line 4 Warning: mb_strrpos() [http://www.php.net/function.mb-strrpos]: Unknown encoding "7" in /in/mCdGh on line 4 NULL bool(false) Warning: Wrong parameter count for strrpos() in /in/mCdGh on line 5 Warning: mb_strrpos() [http://www.php.net/function.mb-strrpos]: Unknown encoding "-4" in /in/mCdGh on line 5 NULL bool(false)

preferences:
302.7 ms | 402 KiB | 459 Q