Kohana_File
File helper class.
Constants
- None
Properties
- None
Methods
public static ext_by_mime(string $type ) (defined in Kohana_File)
Lookup a single file extension by MIME type.
Parameters
- string $type required - MIME type to lookup
Return Values
- string|false - First file extension matching or false
Source Code
public static function ext_by_mime($type)
{
$exts = File::exts_by_mime($type);
if ($exts === FALSE)
{
return FALSE;
}
return current($exts);
}
public static exts_by_mime(string $type ) (defined in Kohana_File)
Lookup file extensions by MIME type
Parameters
- string $type required - File MIME type
Return Values
- array|false - File extensions matching MIME type or false if none
Source Code
public static function exts_by_mime($type)
{
static $types = [];
// Fill the static array
if (empty($types))
{
foreach (Kohana::$config->load('mimes') as $ext => $mimes)
{
foreach ($mimes as $mime)
{
if ($mime == 'application/octet-stream')
{
// octet-stream is a generic binary
continue;
}
if ( ! isset($types[$mime]))
{
$types[$mime] = [ (string) $ext];
}
elseif ( ! in_array($ext, $types[$mime]))
{
$types[$mime][] = (string) $ext;
}
}
}
}
return isset($types[$type]) ? $types[$type] : FALSE;
}
public static join(string $filename ) (defined in Kohana_File)
Join a split file into a whole file. Does the reverse of File::split.
$count = File::join($file);
Parameters
- string $filename required - Split filename, without .000 extension
Return Values
- integer - The number of pieces that were joined.
Source Code
public static function join($filename)
{
// Open the file
$file = fopen($filename, 'wb+');
// Read files in 8k blocks
$block_size = 1024 * 8;
// Total number of pieces
$pieces = 0;
while (is_file($piece = $filename.'.'.str_pad($pieces + 1, 3, '0', STR_PAD_LEFT)))
{
// Read another piece
$pieces += 1;
// Open the piece for reading
$piece = fopen($piece, 'rb');
while ( ! feof($piece))
{
// Transfer the data in blocks
fwrite($file, fread($piece, $block_size));
}
// Close the piece
fclose($piece);
}
return $pieces;
}
public static mime(string $filename ) (defined in Kohana_File)
Attempt to get the mime type from a file. This method is horribly unreliable, due to PHP being horribly unreliable when it comes to determining the mime type of a file.
$mime = File::mime($file);
Parameters
- string $filename required - File name or path
Return Values
- string - Mime type on success
- FALSE - On failure
Source Code
public static function mime($filename)
{
// Get the complete path to the file
$filename = realpath($filename);
// Get the extension from the filename
$extension = strtolower(pathinfo($filename, PATHINFO_EXTENSION));
if (preg_match('/^(?:jpe?g|png|[gt]if|bmp|swf)$/', $extension))
{
// Use getimagesize() to find the mime type on images
$file = getimagesize($filename);
if (isset($file['mime']))
return $file['mime'];
}
if (class_exists('finfo', FALSE))
{
if ($info = new finfo(defined('FILEINFO_MIME_TYPE') ? FILEINFO_MIME_TYPE : FILEINFO_MIME))
{
return $info->file($filename);
}
}
if (ini_get('mime_magic.magicfile') AND function_exists('mime_content_type'))
{
// The mime_content_type function is only useful with a magic file
return mime_content_type($filename);
}
if ( ! empty($extension))
{
return File::mime_by_ext($extension);
}
// Unable to find the mime-type
return FALSE;
}
public static mime_by_ext(string $extension ) (defined in Kohana_File)
Return the mime type of an extension.
$mime = File::mime_by_ext('png'); // "image/png"
Parameters
- string $extension required - Php, pdf, txt, etc
Return Values
- string - Mime type on success
- FALSE - On failure
Source Code
public static function mime_by_ext($extension)
{
// Load all of the mime types
$mimes = Kohana::$config->load('mimes');
return isset($mimes[$extension]) ? $mimes[$extension][0] : FALSE;
}
public static mimes_by_ext(string $extension ) (defined in Kohana_File)
Lookup MIME types for a file
Parameters
- string $extension required - Extension to lookup
Tags
Return Values
- array - Array of MIMEs associated with the specified extension
Source Code
public static function mimes_by_ext($extension)
{
// Load all of the mime types
$mimes = Kohana::$config->load('mimes');
return isset($mimes[$extension]) ? ( (array) $mimes[$extension]) : [];
}
public static split(string $filename [, integer $piece_size = integer 10 ] ) (defined in Kohana_File)
Split a file into pieces matching a specific size. Used when you need to split large files into smaller pieces for easy transmission.
$count = File::split($file);
Parameters
- string $filename required - File to be split
- integer $piece_size = integer 10 - Size, in MB, for each piece to be
Return Values
- integer - The number of pieces that were created
Source Code
public static function split($filename, $piece_size = 10)
{
// Open the input file
$file = fopen($filename, 'rb');
// Change the piece size to bytes
$piece_size = floor($piece_size * 1024 * 1024);
// Write files in 8k blocks
$block_size = 1024 * 8;
// Total number of pieces
$pieces = 0;
while ( ! feof($file))
{
// Create another piece
$pieces += 1;
// Create a new file piece
$piece = str_pad($pieces, 3, '0', STR_PAD_LEFT);
$piece = fopen($filename.'.'.$piece, 'wb+');
// Number of bytes read
$read = 0;
do
{
// Transfer the data in blocks
fwrite($piece, fread($file, $block_size));
// Another block has been read
$read += $block_size;
}
while ($read < $piece_size);
// Close the piece
fclose($piece);
}
// Close the file
fclose($file);
return $pieces;
}
