refactor(php5): only start one background thread both non-zts and zts
refactor(php5): only start one background thread both non-zts and zts

tangyouyi1513/openrasp,tangyouyi1513/openrasp,tangyouyi1513/openrasp,tangyouyi1513/openrasp,tangyouyi1513/openrasp,tangyouyi1513/openrasp,tangyouyi1513/openrasp,tangyouyi1513/openrasp