文件上传upload.html源代码:
<!DOCTYPE html><html><head><meta charset="utf-8"><title>文件上传</title></head><body> ???<!--文件上传表单控件--> ???<form method="post" action="upload_ac.php" enctype="multipart/form-data"> ???????<label for="file">文件名:</label> ???????<input type="file" name="file" id="file"> ???????<input type="submit" name="submit" value="上传"> ???</form></body></html>
文件上传uploadac.php源代码:
<?php#设置编码格式header("Content-type: text/html; charset=utf-8");#限定上传文件格式和大小if ((($_FILES["file"]["type"] == "image/gif")|| ($_FILES["file"]["type"] == "image/jpeg")|| ($_FILES["file"]["type"] == "image/pjpeg"))&& ($_FILES["file"]["size"] < 3000000)) ?{ ??#判断文件是否上传成功 ????if (!empty($_FILES["file"]["error"])) ???{ ???echo "上传有误: " . $_FILES["file"]["error"] . "<br />"; ???} ?else ???{ ???echo "上传文件: " . $_FILES["file"]["name"] . "<br />"; ???echo "文件类型: " . $_FILES["file"]["type"] . "<br />"; ???echo "文件大小: " . ($_FILES["file"]["size"] / 1024) . " Kb<br />"; ???echo "临时文件名: " . $_FILES["file"]["tmp_name"] . "<br />"; ???#判断目标文件夹中是否存在同名文件 ???if (file_exists("upload/" . $_FILES["file"]["name"])) ?????{ ?????#存在同名文件时,输出‘文件已存在‘ ?????echo $_FILES["file"]["name"] . " 文件已存在 "; ?????} ???else ?????{ ?????#将上传文件保存于目标文件夹 ?????#iconv("UTF-8", "GBK",$_FILES["file"]["name"])是强制转码,防止上传文件名出现乱码 ?????move_uploaded_file($_FILES["file"]["tmp_name"], ?????"upload/" . iconv("UTF-8", "GBK",$_FILES["file"]["name"])); ?????echo "文件已存于: " . "upload/" . $_FILES["file"]["name"]; ?????} ???} ?}else ?{ ?echo "上传文件无效"; ?}?>实现效果图如下:
PHP文件上传
原文地址：https://www.cnblogs.com/davis16/p/8707886.html