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<?php $strings = [ '$hey()', '$hey->hi()', '$hey(\'hi\')', '$hey moretext()' ]; foreach ($strings as $string) { if (preg_match('~^\$\w+\([^)]*)$~', $string)) { echo $string . "\n"; } }
Output for git.master, git.master_jit, rfc.property-hooks
Warning: preg_match(): Compilation failed: unmatched closing parenthesis at offset 13 in /in/7cXYP on line 11 Warning: preg_match(): Compilation failed: unmatched closing parenthesis at offset 13 in /in/7cXYP on line 11 Warning: preg_match(): Compilation failed: unmatched closing parenthesis at offset 13 in /in/7cXYP on line 11 Warning: preg_match(): Compilation failed: unmatched closing parenthesis at offset 13 in /in/7cXYP on line 11

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