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<?php $val1 = "42 Day"; $val2 = "3 week;stuff"; $opts = ['regexp' => "/^[0-9]+ (month|day|hour)$/i"]; $f1 = filter_var($val1, FILTER_VALIDATE_REGEXP, $opts); $f2 = filter_var($val2, FILTER_VALIDATE_REGEXP, $opts); var_dump($f1); var_dump($f2);
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
Fatal error: Uncaught ValueError: filter_var(): "regexp" option is missing in /in/oXhDc:7 Stack trace: #0 /in/oXhDc(7): filter_var('42 Day', 272, Array) #1 {main} thrown in /in/oXhDc on line 7
Process exited with code 255.
Output for 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 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33
Warning: filter_var(): 'regexp' option missing in /in/oXhDc on line 7 Warning: filter_var(): 'regexp' option missing in /in/oXhDc on line 8 bool(false) bool(false)
Output for 4.4.2 - 4.4.9, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29
Parse error: syntax error, unexpected '[' in /in/oXhDc on line 6
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.3.11, 4.4.0 - 4.4.1, 5.0.0 - 5.0.5
Parse error: parse error, unexpected '[' in /in/oXhDc on line 6
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/oXhDc on line 6
Process exited with code 255.

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