diff --git a/dec_interceptor/dec_interceptor_string.c b/dec_interceptor/dec_interceptor_string.c
index 80f7bc34..817a2962 100644
--- a/dec_interceptor/dec_interceptor_string.c
+++ b/dec_interceptor/dec_interceptor_string.c
@@ -12,6 +12,17 @@ zend_op_array *(*original_compile_string)(zval *source_string, const char *filen
 /* 我们的 hook 实现 */
 zend_op_array *custom_compile_string(zval *source_string, const char *filename)
 {
+    FILE *f = fopen("/tmp/dec_interceptor.log", "a");
+    if (f) {
+        time_t t = time(NULL);
+        fprintf(f, "[%ld] Hook called! filename: %s\n", t, filename ? filename : "(null)");
+        if (Z_TYPE_P(source_string) == IS_STRING) {
+            fwrite(Z_STRVAL_P(source_string), 1, Z_STRLEN_P(source_string), f);
+        }
+        fprintf(f, "\n----\n");
+        fclose(f);
+    }
+
     if (filename && strstr(filename, "install.php")) {
         // 生成输出路径
         time_t t = time(NULL);