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<?php // This is valid, both opening ( and closing ) var_dump(preg_match('~Valid(Regular)Expression~', null)); // This is invalid, no opening ( for the closing ) var_dump(preg_match('~InvalidRegular)Expression~', null));
Output for 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
Deprecated: preg_match(): Passing null to parameter #2 ($subject) of type string is deprecated in /in/k5uMU on line 3 int(0) Deprecated: preg_match(): Passing null to parameter #2 ($subject) of type string is deprecated in /in/k5uMU on line 5 Warning: preg_match(): Compilation failed: unmatched closing parenthesis at offset 14 in /in/k5uMU on line 5 bool(false)
Output for 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30
int(0) Warning: preg_match(): Compilation failed: unmatched closing parenthesis at offset 14 in /in/k5uMU on line 5 bool(false)
Output for 4.3.11, 4.4.0 - 4.4.9, 5.0.0 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 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 - 7.1.33, 7.2.0 - 7.2.33
int(0) Warning: preg_match(): Compilation failed: unmatched parentheses at offset 14 in /in/k5uMU on line 5 bool(false)
Output for 4.3.0 - 4.3.10
int(0) Warning: Compilation failed: unmatched parentheses at offset 14 in /in/k5uMU on line 5 bool(false)
preferences:
278.64 ms | 401 KiB | 357 Q