diff --git "a/\346\235\250\347\201\277/20220522.md.txt" "b/\346\235\250\347\201\277/20220522.md.txt"
new file mode 100644
index 0000000000000000000000000000000000000000..5ed67c6ea7550c33d3bd9a0fe0df1147797acc14
--- /dev/null
+++ "b/\346\235\250\347\201\277/20220522.md.txt"
@@ -0,0 +1,46 @@
+```php
+
+
+
+
+ 上传文件
+
+
+
+
+
+
+```
+
+```php
+//实现一个文件上传，限制只能上传pdf和word格式，大小为1M以内。
+$error=$_FILES['file1']['error'];
+if ($error==0) {
+ define("daxiao", 1024 * 1024);
+ $size=$_FILES['file1']['size'];
+ if ($size >daxiao) {
+ echo "文件上传太大了";
+ } else {
+ echo "允许上传文件的大小";
+ $arr = array("pdf", "docx");
+ $name = $_FILES['file1']['name'];
+ $namearr = explode(".",$name);
+ $lname = end($namearr);
+ $result = in_array($lname,$arr);
+ if (!$result) {
+ echo "不符合上传文件类型";
+ } else {
+ echo "符合上传文件类型";
+
+ }
+
+ }
+}else{
+ echo "上传失败";
+}
+```
+