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<?php $str = 'November 1997'; $str2 = 'November 20, 2001'; $matches; preg_match('/\d{4}/', $str,$matches); var_dump( (int) $str, intval($str), filter_var($str, FILTER_SANITIZE_NUMBER_INT), $matches );
Output for 5.2.0 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.24 - 5.5.35, 5.6.8 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.25, 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(0) int(0) string(4) "1997" array(1) { [0]=> string(4) "1997" }
Output for 5.1.0 - 5.1.6
Fatal error: Call to undefined function filter_var() in /in/cOcCY on line 9
Process exited with code 255.
Output for 5.0.4 - 5.0.5
Notice: Undefined variable: matches in /in/cOcCY on line 4 Fatal error: Call to undefined function filter_var() in /in/cOcCY on line 9
Process exited with code 255.
Output for 5.0.0 - 5.0.3
Notice: Undefined variable: matches in /in/cOcCY on line 4 Fatal error: Call to undefined function filter_var() in /in/cOcCY on line 9
Process exited with code 255.
Output for 4.4.5 - 4.4.9
Notice: Undefined variable: matches in /in/cOcCY on line 4 Fatal error: Call to undefined function: filter_var() in /in/cOcCY on line 9
Process exited with code 255.
Output for 4.3.2 - 4.3.11, 4.4.0 - 4.4.4
Notice: Undefined variable: matches in /in/cOcCY on line 4 Fatal error: Call to undefined function: filter_var() in /in/cOcCY on line 9
Process exited with code 255.
Output for 4.3.0 - 4.3.1
Notice: Undefined variable: matches in /in/cOcCY on line 4 Fatal error: Call to undefined function: filter_var() in /in/cOcCY on line 9
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229.6 ms | 402 KiB | 327 Q