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<?php $result = preg_replace( '/\g/', '', '/_ticket/_show/xxx' ); var_dump( $result ); exit;
Output for git.master, git.master_jit, rfc.property-hooks
Warning: preg_replace(): Compilation failed: \g is not followed by a braced, angle-bracketed, or quoted name/number or by a plain number at offset 2 in /in/K1rRO on line 2 NULL

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