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author | dchill42 <dchill42@gmail.com> | 2012-07-23 16:53:47 +0200 |
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committer | dchill42 <dchill42@gmail.com> | 2012-07-23 16:53:47 +0200 |
commit | c5079de78e5141330c07e990811ef15e998e95aa (patch) | |
tree | 0f39d8c4fc7614246fc185810bfeaa7fad88a33a /user_guide_src/source/helpers/path_helper.rst | |
parent | 00fcb545109d4e61bc14e403ec828749c34a54b3 (diff) | |
parent | ede49ba66b127535f3430e20aac72ceed2c4611a (diff) |
Merge branch develop of github.com:/EllisLab/CodeIgniter into session
Diffstat (limited to 'user_guide_src/source/helpers/path_helper.rst')
-rw-r--r-- | user_guide_src/source/helpers/path_helper.rst | 43 |
1 files changed, 43 insertions, 0 deletions
diff --git a/user_guide_src/source/helpers/path_helper.rst b/user_guide_src/source/helpers/path_helper.rst new file mode 100644 index 000000000..847f5a08b --- /dev/null +++ b/user_guide_src/source/helpers/path_helper.rst @@ -0,0 +1,43 @@ +########### +Path Helper +########### + +The Path Helper file contains functions that permits you to work with +file paths on the server. + +.. contents:: Page Contents + +Loading this Helper +=================== + +This helper is loaded using the following code + +:: + + $this->load->helper('path'); + +The following functions are available: + +set_realpath() +============== + +Checks to see if the path exists. This function will return a server +path without symbolic links or relative directory structures. An +optional second argument will cause an error to be triggered if the path +cannot be resolved. + +:: + + $file = '/etc/php5/apache2/php.ini'; + echo set_realpath($file); // returns "/etc/php5/apache2/php.ini" + + $non_existent_file = '/path/to/non-exist-file.txt'; + echo set_realpath($non_existent_file, TRUE); // shows an error, as the path cannot be resolved + echo set_realpath($non_existent_file, FALSE); // returns "/path/to/non-exist-file.txt" + + $directory = '/etc/php5'; + echo set_realpath($directory); // returns "/etc/php5/" + + $non_existent_directory = '/path/to/nowhere'; + echo set_realpath($non_existent_directory, TRUE); // shows an error, as the path cannot be resolved + echo set_realpath($non_existent_directory, FALSE); // returns "/path/to/nowhere" |