FileHelper

Type

Class

Namespace

craft\helpers

Inherits

craft\helpers\FileHelper » yii\helpers\FileHelper (opens new window) » yii\helpers\BaseFileHelper (opens new window)

Since

3.0.0

Class FileHelper

View source (opens new window)

Public Properties

Property	Description
mimeAliasesFile (opens new window)	string (opens new window) – The path (or alias) of a PHP file containing MIME aliases.
mimeMagicFile	string (opens new window) – The path (or alias) of a PHP file containing MIME type information.

mimeMagicFile

Type

string (opens new window)

Default value

'@app/config/mimeTypes.php'

The path (or alias) of a PHP file containing MIME type information.

View source (opens new window)

Public Methods

Method	Description
absolutePath()	Returns an absolute path based on a source location or the current working directory.
addFilesToZip()	Adds all the files in a given directory to a ZipArchive, preserving the nested directory structure.
canTrustMimeType()	Returns whether a MIME type can be trusted, or whether we should double-check based on the file extension.
changeOwnership() (opens new window)	Changes the Unix user and/or group ownership of a file or directory, and optionally the mode.
clearDirectory()	Removes all of a directory’s contents recursively.
copyDirectory()	Copies a whole directory as another one.
createDirectory()	Creates a new directory.
cycle()	Moves existing files down to *.1, *.2, etc.
deleteFileAfterRequest()	Deletes a file after the request ends.
deleteQueuedFiles()	Delete all files queued up for deletion.
filterPath() (opens new window)	Checks if the given file path satisfies the filtering options.
findClosestFile()	Traverses up the filesystem looking for the closest file to the given directory.
findDirectories() (opens new window)	Returns the directories found under the specified directory and subdirectories.
findFiles() (opens new window)	Returns the files found under the specified directory and subdirectories.
getExtensionByMimeType()	Return a file extension for the given MIME type.
getExtensionsByMimeType() (opens new window)	Determines the extensions by given MIME type.
getMimeType()	Determines the MIME type of the specified file.
getMimeTypeByExtension() (opens new window)	Determines the MIME type based on the extension name of the specified file.
hasAnythingChanged()	Returns whether any files in a source directory have changed, compared to another directory.
invalidate()	Invalidates a cached file with clearstatcache() and opcache_invalidate().
isDirectoryEmpty()	Returns whether a given directory is empty (has no files) recursively.
isGif()	Returns whether the given file path is an GIF image.
isSvg()	Returns whether the given file path is an SVG image.
isWithin()	Returns whether the given path is within another path.
isWritable()	Tests whether a file/directory is writable.
lastModifiedTime()	Returns the last modification time for the given path.
localize() (opens new window)	Returns the localized version of a specified file.
normalizePath()	Normalizes a file/directory path.
relativePath()	Returns a relative path based on a source location or the current working directory.
removeDirectory()	Removes a directory (and all its content) recursively.
sanitizeFilename()	Sanitizes a filename.
uniqueName()	Returns a unique version of a filename with uniqid(), ensuring the result is at most 255 characters.
unlink()	Removes a file or symlink in a cross-platform way
useFileLocks()	Returns whether file locks can be used when writing to files.
writeGitignoreFile()	Creates a .gitignore file in the given directory if one doesn’t exist yet.
writeToFile()	Writes contents to a file.
zip()	Zips a file.

absolutePath()

Since

4.3.5

Returns an absolute path based on a source location or the current working directory.

View source (opens new window)

Arguments

• $to (string (opens new window)) – The target path.
• $from (string (opens new window), null (opens new window)) – The source location. Defaults to the current working directory.
• $ds (string (opens new window)) – The directory separator to be used in the normalized result. Defaults to DIRECTORY_SEPARATOR.

Returns

string (opens new window)

addFilesToZip()

Since

3.5.0

Adds all the files in a given directory to a ZipArchive, preserving the nested directory structure.

View source (opens new window)

Arguments

• $zip (ZipArchive (opens new window)) – The ZipArchive object
• $dir (string (opens new window)) – The directory path
• $prefix (string (opens new window), null (opens new window)) – The path prefix to use when adding the contents of the directory
• $options (array (opens new window)) – Options for file searching. See findFiles() (opens new window) for available options.

canTrustMimeType()

Since

3.1.7

Returns whether a MIME type can be trusted, or whether we should double-check based on the file extension.

View source (opens new window)

Arguments

• $mimeType (string (opens new window))

Returns

boolean (opens new window)

clearDirectory()

Removes all of a directory’s contents recursively.

View source (opens new window)

Arguments

• $dir (string (opens new window)) – The directory to be deleted recursively.
• $options (array (opens new window)) – Options for directory remove. Valid options are:
• traverseSymlinks: bool, whether symlinks to the directories should be traversed too. Defaults to false, meaning the content of the symlinked directory would not be deleted. Only symlink would be removed in that default case.
• filter: callback (see findFiles() (opens new window))
• except: array (see findFiles() (opens new window))
• only: array (see findFiles() (opens new window))

Throws

• yii\base\InvalidArgumentException (opens new window)
  if the dir is invalid
• yii\base\ErrorException (opens new window)
  in case of failure

copyDirectory()

Copies a whole directory as another one.

The files and sub-directories will also be copied over.

View source (opens new window)

Arguments

• $src (string (opens new window)) – The source directory

• $dst (string (opens new window)) – The destination directory

• $options (array (opens new window)) – Options for directory copy. Valid options are:

• dirMode: integer, the permission to be set for newly copied directories. Defaults to 0775.

• fileMode: integer, the permission to be set for newly copied files. Defaults to the current environment setting.

• filter: callback, a PHP callback that is called for each directory or file. The signature of the callback should be: function ($path), where $path refers the full path to be filtered. The callback can return one of the following values:

  • true: the directory or file will be copied (the "only" and "except" options will be ignored)
  • false: the directory or file will NOT be copied (the "only" and "except" options will be ignored)
  • null: the "only" and "except" options will determine whether the directory or file should be copied

• only: array, list of patterns that the file paths should match if they want to be copied. A path matches a pattern if it contains the pattern string at its end. For example, '.php' matches all file paths ending with '.php'. Note, the '/' characters in a pattern matches both '/' and '' in the paths. If a file path matches a pattern in both "only" and "except", it will NOT be copied.

• except: array, list of patterns that the files or directories should match if they want to be excluded from being copied. A path matches a pattern if it contains the pattern string at its end. Patterns ending with '/' apply to directory paths only, and patterns not ending with '/' apply to file paths only. For example, '/a/b' matches all file paths ending with '/a/b'; and '.svn/' matches directory paths ending with '.svn'. Note, the '/' characters in a pattern matches both '/' and '' in the paths.

• caseSensitive: boolean, whether patterns specified at "only" or "except" should be case sensitive. Defaults to true.

• recursive: boolean, whether the files under the subdirectories should also be copied. Defaults to true.

• beforeCopy: callback, a PHP callback that is called before copying each sub-directory or file. If the callback returns false, the copy operation for the sub-directory or file will be cancelled. The signature of the callback should be: function ($from, $to), where $from is the sub-directory or file to be copied from, while $to is the copy target.

• afterCopy: callback, a PHP callback that is called after each sub-directory or file is successfully copied. The signature of the callback should be: function ($from, $to), where $from is the sub-directory or file copied from, while $to is the copy target.

• copyEmptyDirectories: boolean, whether to copy empty directories. Set this to false to avoid creating directories that do not contain files. This affects directories that do not contain files initially as well as directories that do not contain files at the target destination because files have been filtered via only or except. Defaults to true. This option is available since version 2.0.12. Before 2.0.12 empty directories are always copied.

Throws

• yii\base\InvalidArgumentException (opens new window)
  if unable to open directory

createDirectory()

Creates a new directory.

This method is similar to the PHP mkdir() function except that it uses chmod() to set the permission of the created directory in order to avoid the impact of the umask setting.

View source (opens new window)

Arguments

• $path (string (opens new window)) – Path of the directory to be created.
• $mode (integer (opens new window)) – The permission to be set for the created directory.
• $recursive (boolean (opens new window)) – Whether to create parent directories if they do not exist.

Returns

boolean (opens new window) – Whether the directory is created successfully

Throws

• yii\base\Exception (opens new window)
  if the directory could not be created (i.e. php error due to parallel changes)

cycle()

Since

3.0.38

Moves existing files down to *.1, *.2, etc.

View source (opens new window)

Arguments

• $basePath (string (opens new window)) – The base path to the first file (sans .X)
• $max (integer (opens new window)) – The most files that can coexist before we should start deleting them

deleteFileAfterRequest()

Since

4.0.0

Deletes a file after the request ends.

View source (opens new window)

Arguments

• $filename (string (opens new window))

deleteQueuedFiles()

Since

4.0.0

Delete all files queued up for deletion.

View source (opens new window)

findClosestFile()

Since

4.3.5

Traverses up the filesystem looking for the closest file to the given directory.

View source (opens new window)

Arguments

• $dir (string (opens new window)) – The directory at or above which the file will be looked for
• $options (array (opens new window)) – Options for file searching. See findFiles() (opens new window).

Returns

string (opens new window), null (opens new window) – The closest matching file

Throws

• yii\base\InvalidArgumentException (opens new window)
  if the directory is invalid

getExtensionByMimeType()

Since

3.5.15

Return a file extension for the given MIME type.

View source (opens new window)

Arguments

• $mimeType (string (opens new window))

Returns

string (opens new window)

Throws

• yii\base\InvalidArgumentException (opens new window)
  if no known extensions exist for the given MIME type.

getMimeType()

Determines the MIME type of the specified file.

This method will first try to determine the MIME type based on finfo_open (opens new window). If the fileinfo extension is not installed, it will fall back to getMimeTypeByExtension() (opens new window) when $checkExtension is true.

View source (opens new window)

Arguments

• $file (string (opens new window)) – The file name.
• $magicFile (string (opens new window), null (opens new window)) – Name of the optional magic database file (or alias), usually something like /path/to/magic.mime. This will be passed as the second parameter to finfo_open() (opens new window) when the fileinfo extension is installed. If the MIME type is being determined based via getMimeTypeByExtension() (opens new window) and this is null, it will use the file specified by mimeMagicFile.
• $checkExtension (boolean (opens new window)) – Whether to use the file extension to determine the MIME type in case finfo_open() cannot determine it.

Returns

string (opens new window), null (opens new window) – The MIME type (e.g. text/plain). Null is returned if the MIME type cannot be determined.

Throws

• yii\base\InvalidConfigException (opens new window)
  when the fileinfo PHP extension is not installed and $checkExtension is false.

hasAnythingChanged()

Returns whether any files in a source directory have changed, compared to another directory.

View source (opens new window)

Arguments

• $dir (string (opens new window)) – The source directory to check for changes in
• $ref (string (opens new window)) – The reference directory

Returns

boolean (opens new window)

Throws

• yii\base\InvalidArgumentException (opens new window)
  if $dir or $ref isn't a directory
• yii\base\ErrorException (opens new window)
  if we can't get a handle on $src

invalidate()

Since

3.4.0

Invalidates a cached file with clearstatcache() and opcache_invalidate().

View source (opens new window)

Arguments

• $file (string (opens new window)) – The file path

isDirectoryEmpty()

Returns whether a given directory is empty (has no files) recursively.

View source (opens new window)

Arguments

• $dir (string (opens new window)) – The directory to be checked

Returns

boolean (opens new window) – Whether the directory is empty

Throws

• yii\base\InvalidArgumentException (opens new window)
  if the dir is invalid
• yii\base\ErrorException (opens new window)
  in case of failure

isGif()

Since

3.0.9

Returns whether the given file path is an GIF image.

View source (opens new window)

Arguments

• $file (string (opens new window)) – The file name.
• $magicFile (string (opens new window), null (opens new window)) – Name of the optional magic database file (or alias), usually something like /path/to/magic.mime. This will be passed as the second parameter to finfo_open() (opens new window) when the fileinfo extension is installed. If the MIME type is being determined based via getMimeTypeByExtension() (opens new window) and this is null, it will use the file specified by mimeMagicFile.
• $checkExtension (boolean (opens new window)) – Whether to use the file extension to determine the MIME type in case finfo_open() cannot determine it.

Returns

boolean (opens new window)

isSvg()

Returns whether the given file path is an SVG image.

View source (opens new window)

Arguments

• $file (string (opens new window)) – The file name.
• $magicFile (string (opens new window), null (opens new window)) – Name of the optional magic database file (or alias), usually something like /path/to/magic.mime. This will be passed as the second parameter to finfo_open() (opens new window) when the fileinfo extension is installed. If the MIME type is being determined based via getMimeTypeByExtension() (opens new window) and this is null, it will use the file specified by mimeMagicFile.
• $checkExtension (boolean (opens new window)) – Whether to use the file extension to determine the MIME type in case finfo_open() cannot determine it.

Returns

boolean (opens new window)

isWithin()

Returns whether the given path is within another path.

View source (opens new window)

Arguments

• $path (string (opens new window)) – The path to check
• $parentPath (string (opens new window)) – The parent path that $path should be within

Returns

boolean (opens new window)

isWritable()

Tests whether a file/directory is writable.

View source (opens new window)

Arguments

• $path (string (opens new window)) – The file/directory path to test

Returns

boolean (opens new window) – Whether the path is writable

Throws

• yii\base\ErrorException (opens new window)
  in case of failure

lastModifiedTime()

Returns the last modification time for the given path.

If the path is a directory, any nested files/directories will be checked as well.

View source (opens new window)

Arguments

• $path (string (opens new window)) – The directory to be checked

Returns

integer (opens new window) – Unix timestamp representing the last modification time

normalizePath()

Normalizes a file/directory path.

The normalization does the following work:

• Convert all directory separators into DIRECTORY_SEPARATOR (e.g. "\a/b\c" becomes "/a/b/c")
• Remove trailing directory separators (e.g. "/a/b/c/" becomes "/a/b/c")
• Turn multiple consecutive slashes into a single one (e.g. "/a///b/c" becomes "/a/b/c")
• Remove ".." and "." based on their meanings (e.g. "/a/./b/../c" becomes "/a/c")

Note: For registered stream wrappers, the consecutive slashes rule and ".."/"." translations are skipped.

View source (opens new window)

Arguments

• $path (string (opens new window)) – The file/directory path to be normalized
• $ds (string (opens new window)) – The directory separator to be used in the normalized result. Defaults to DIRECTORY_SEPARATOR.

Returns

string (opens new window) – The normalized file/directory path

relativePath()

Since

4.3.5

Returns a relative path based on a source location or the current working directory.

View source (opens new window)

Arguments

• $to (string (opens new window)) – The target path.
• $from (string (opens new window), null (opens new window)) – The source location. Defaults to the current working directory.
• $ds (string (opens new window)) – The directory separator to be used in the normalized result. Defaults to DIRECTORY_SEPARATOR.

Returns

string (opens new window) – The relative path if possible, or an absolute path if the directory is not contained within $from.

removeDirectory()

Removes a directory (and all its content) recursively.

View source (opens new window)

Arguments

• $dir (string (opens new window)) – The directory to be deleted recursively.

• $options (array (opens new window)) – Options for directory remove. Valid options are:

• traverseSymlinks: boolean, whether symlinks to the directories should be traversed too. Defaults to false, meaning the content of the symlinked directory would not be deleted. Only symlink would be removed in that default case.

Throws

• yii\base\ErrorException (opens new window)
  in case of failure

sanitizeFilename()

Sanitizes a filename.

View source (opens new window)

Arguments

• $filename (string (opens new window)) – The filename to sanitize
• $options (array (opens new window)) – Options for sanitization. Valid options are:
• asciiOnly: bool, whether only ASCII characters should be allowed. Defaults to false.
• separator: string|null, the separator character to use in place of whitespace. defaults to '-'. If set to null, whitespace will be preserved.

Returns

string (opens new window) – The cleansed filename

uniqueName()

Since

4.4.3

Returns a unique version of a filename with uniqid(), ensuring the result is at most 255 characters.

View source (opens new window)

Arguments

• $baseName (string (opens new window)) – The original filename, or just a file extension prefixed with a ..

Returns

string (opens new window)

unlink()

Since

3.4.16

Removes a file or symlink in a cross-platform way

View source (opens new window)

Arguments

• $path (string (opens new window))

Returns

boolean (opens new window)

useFileLocks()

Returns whether file locks can be used when writing to files.

View source (opens new window)

Returns

boolean (opens new window)

writeGitignoreFile()

Since

3.4.0

Creates a .gitignore file in the given directory if one doesn’t exist yet.

View source (opens new window)

Arguments

• $path (string (opens new window))
• $options (array (opens new window)) – Options for file write. Valid options are:
• createDirs: bool, whether to create parent directories if they do not exist. Defaults to true.
• lock: bool, whether a file lock should be used. Defaults to false.

Throws

• yii\base\InvalidArgumentException (opens new window)
  if the parent directory doesn't exist and options[createDirs] is false
• yii\base\Exception (opens new window)
  if the parent directory can't be created
• yii\base\ErrorException (opens new window)
  in case of failure

writeToFile()

Writes contents to a file.

View source (opens new window)

Arguments

• $file (string (opens new window)) – The file path
• $contents (string (opens new window)) – The new file contents
• $options (array (opens new window)) – Options for file write. Valid options are:
• createDirs: bool, whether to create parent directories if they do not exist. Defaults to true.
• append: bool, whether the contents should be appended to the existing contents. Defaults to false.
• lock: bool, whether a file lock should be used. Defaults to the useWriteFileLock config setting.

Throws

• yii\base\InvalidArgumentException (opens new window)
  if the parent directory doesn't exist and options[createDirs] is false
• yii\base\Exception (opens new window)
  if the parent directory can't be created
• yii\base\ErrorException (opens new window)
  in case of failure

zip()

Since

3.5.0

Zips a file.

View source (opens new window)

Arguments

• $path (string (opens new window)) – The file/directory path
• $to (string (opens new window), null (opens new window)) – The target zip file path. If null, the original path will be used, with “.zip” appended to it.

Returns

string (opens new window) – The zip file path

Throws

• yii\base\InvalidArgumentException (opens new window)
  if $path is not a valid file/directory path
• yii\base\Exception (opens new window)
  if the zip cannot be created

Protected Methods

Method	Description
loadMimeAliases() (opens new window)	Loads MIME aliases from the specified file.
loadMimeTypes() (opens new window)	Loads MIME types from the specified file.
normalizeOptions() (opens new window)

Constants

Constant	Description
PATTERN_CASE_INSENSITIVE
PATTERN_ENDSWITH
PATTERN_MUSTBEDIR
PATTERN_NEGATIVE
PATTERN_NODIR