A simple PHP file upload sample program_PHP tutorial

This article will introduce a simple PHP file upload sample program code to beginners. Friends who need to learn can enter it for reference.

The code is as follows

代码如下

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// 定义提示函数 function alert($msg){ return ''; } // 定义允许的文件类型 $allowType = array('image/jpeg','image/gif','image/jpg'); // 定义路径，可以是绝对路径，或者相对路径都可以 $filePath = './uploadFileDir/';   // 接收表单信息 其中里边写的 file 值是 静态页form表单里的name值 $file = $_FILES['file'];   // 第一步，判断上传的文件是否有错误 if( $file['error'] !== 0 ){ exit(alert('文件上传错误')); }   // 第二步，判断文件大小，这里的102400是字节，换算为kb就是100kb if( $file['size'] > 102400 ){ exit(alert('文件过大')); }   // 第三步，判断文件类型 if( !in_array(mime_content_type($file['tmp_name']),$allowType) ){ exit(alert('文件类型错误')); }   // 第四步，判断路径是否存在，如果不存在则创建 if( !file_exists($filePath) && !mkdir($filePath,0777,true) ){ exit(alert('创建目录错误')); }   // 第五步，定义上传后的名字及路径 $filename = time().'_'.$file['name'];   // 第六步，复制文件 if( !copy($file['tmp_name'],$filePath.$filename) ){ exit(alert('上传文件出错，请稍候重试')); }   // 第七步，删除临时文件 unlink($file['tmp_name']);   // 提示上传成功 echo alert('恭喜，上传文件['.$filename.']成功！'); ?>

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//Define prompt function

function alert($msg){ return ''; }
// Define allowed file types $allowType = array('image/jpeg','image/gif','image/jpg');
// Define the path, which can be an absolute path or a relative path $filePath = './uploadFileDir/';

//Receive form information. The file value written inside is the name value in the static page form $file = $_FILES['file']; // The first step is to determine whether the uploaded file has errors if( $file['error'] !== 0 ){ exit(alert('File upload error')); } // The second step is to determine the file size. 102400 here is bytes, converted to kb it is 100kb if( $file['size'] > 102400 ){ exit(alert('File too large')); } //The third step is to determine the file type if( !in_array(mime_content_type($file['tmp_name']),$allowType) ){ exit(alert('File type error')); } // The fourth step is to determine whether the path exists. If it does not exist, create it if( !file_exists($filePath) && !mkdir($filePath,0777,true) ){ exit(alert('Error creating directory')); } //The fifth step, define the name and path after uploading $filename = time().'_'.$file['name']; // Step 6, copy the file if( !copy($file['tmp_name'],$filePath.$filename) ){ exit(alert('Error uploading file, please try again later')); } // Step 7, delete temporary files unlink($file['tmp_name']); // Prompt upload successful echo alert('Congratulations, uploading file ['.$filename.'] was successful!');
?> http://www.bkjia.com/PHPjc/628866.htmlwww.bkjia.comtruehttp: //www.bkjia.com/PHPjc/628866.htmlTechArticleThis article will introduce a simple PHP file upload sample program code to beginners. Friends who need to learn References can be entered. The code is as follows Copy code ?php // Definition prompt...

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