diff --git a/blog/php-basic/index.md b/blog/php-basic/index.md
index d60de13c5c33c4b5ef8d735ca28cc88c17333025..d79451d69c74adc85f1a873785472f0dac837c74 100644
--- a/blog/php-basic/index.md
+++ b/blog/php-basic/index.md
@@ -20,7 +20,7 @@
 
 9. [PHP 函数 function](blog/php-basic/function.md)
 
-[PHP 错误处理 error](blog/php-basic/error.md)
+10. [PHP 错误处理 error](blog/php-basic/error.md)
 
 [PHP 字符串 String](blog/php-basic/string.md)