php_stream_filter_append_ex 1222 ext/standard/streamsfuncs.c ret = php_stream_filter_append_ex(&stream->readfilters, filter TSRMLS_CC); php_stream_filter_append_ex 1239 ext/standard/streamsfuncs.c ret = php_stream_filter_append_ex(&stream->writefilters, filter TSRMLS_CC); php_stream_filter_append_ex 420 main/streams/filter.c if (php_stream_filter_append_ex(chain, filter TSRMLS_CC) != SUCCESS) {