PHP--Uploading files

<title>php– Uploading Files</title> php– uploading a file table of Contents

• /etc/php.ini configuration file Information
• Error value
• Uploading files
• Uploading Multiple files
• Determine if the file is a post
• Set the allowed file types

/etc/php.ini configuration file Information

File_uploads = Onupload_max_filesize = 100m       # The maximum allowable upload file size post_max_size = 100M             # refers to the maximum value that can be received by the form POST to PHP Upload_ Tmp_dir =/tmp            # temp file directory max_file_uploads =            # maximum number of files

Max_execution_time =         # maximum time value per PHP page run (seconds) memory_limit = 128M              # maximum memory consumed per PHP page max_input_time =              Maximum time allowed for data (seconds) Max_input_nesting_level =     # of the nesting depth of input variables

Error value

0 indicates that the file size of Ok1 uploaded exceeds upload_max_filesize2 over max_file_size   #  <input type= "hidden" name= "max_file_size" value= "30000" >3 file only part of the uploaded 4 file was not uploaded 6 did not find temp directory 7 file write failed (possibly a permissions issue) 8 was interrupted by PHP extension

Uploading files

<form  action  = method  = "post"  enctype  = "Multipart/form-data"  > <input  type  = "file"  name  = "myfile"  ><< Span style= "color: #87cefa;" >br /> <type  = "submit"  value  = "Upload file"  ></form ; 

$filename=$_files[' myfile '][' name '];$type=$_files[' myfile '][' type '];$Tmp_name=$_files[' myfile '][' Tmp_name '];$size=$_files[' myfile '][' Size '];$Error=$_files[' myfile '][' ERROR '];$Destination= DirName (__file__).'/upload/'.$filename; Move_uploaded_file ($Tmp_name,$Destination);

Uploading Multiple files

<form Action="doaction.php" Method="POST" enctype="Multipart/form-data"> <input type="File" name="myfile[]"><BR/> <input type="File" name="myfile[]"><BR/> <input type="Submit" value="Upload file"></form>

foreach($myfile  as $file) {$filename=$_files[' file '][' name '];$type=$_files[' file '][' type '];$Tmp_name=$_files[' file '][' Tmp_name '];$size=$_files[' file '][' Size '];$Error=$_files[' file '][' ERROR '];} ...

Determine if the file is a post

if (!is_uploaded_file ($tmp_name)) {    exit("File not uploaded by HTTP POST");}

Set the allowed file types

2. Through forms
   

   <input type= "File" Name= "MyFile" accept= "Mime_type"/>mime_type:  image/jpeg,image/png,image/gif ...

4. through PHP authentication
   Get the suffix name:
   

    $ext = Strtolower (End (Explode ('. ', $filename))); $ext = PathInfo ($ filename) [' extension ']; 

   $   Arrext  = [ ' jpeg ' ,  ' png ' ,  ' gif ' ]; if  (! In_array ($  ext , $  arrext  ) {exit  ( "illegal file type );} 

6. Verify that the picture is true
   

   if (!getimagesize ($tmp_name)) {    exit("Not a real picture");}

PHP--Uploading files