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<?php var_dump(json_decode(<<<JSON { "CORS_ALLOW_ORIGIN": "^https?://localhost\\\\(:[0-9]+\\\\)?$" } JSON , true)); var_dump(json_last_error_msg());
Output for git.master, git.master_jit, rfc.property-hooks
array(1) { ["CORS_ALLOW_ORIGIN"]=> string(32) "^https?://localhost\(:[0-9]+\)?$" } string(8) "No error"

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