Get file path in php how to#
Get file path in php code#

Get file path in php how to#

In this post I'll show you how to change the aspect ratio of an image or element using CSS, and explain why this is important. This example takes the parent directory of вЂ_FILE_вЂ™ and then resolves вЂ/.вЂ™ using realpath() to move it 1 level higher.Д¬hange the aspect ratio of an image using CSS by Gav There are a few ways that we could achieve this, one of them is using dirname(). This means that we have to remove the вЂindex.phpвЂ™ from our вЂ_FILE_вЂ™ string. If we are going back even further than PHP 5.3 then we would have to use realpath(), dirname() and the вЂMagic ConstantвЂ™ вЂ_FILE_вЂ™.Д®ssentially, realpath() wonвЂ™t accept a file, only a path. If we were to use вЂ/./.вЂ™ then we would move 2 levels higher, and so on. In this example, realpath() resolves the reference вЂ/.вЂ™ in relation to вЂ_DIR_вЂ™ and moves us 1 level higher. The вЂMagic ConstantвЂ™ вЂ_DIR_вЂ™ was added to PHP in 5.3, so for people 5.3 to 5.6 we can move directory levels like this:ДЄgain, assuming that our script is running in /path/to/file/index.php: $dir = realpath(_DIR_. If you happen to be using an older version of PHP then luckily we can use realpath(). By specifying a level of 2 we now move to вЂ/path/toвЂ™ instead. If we use вЂ_FILE_вЂ™ it is slightly different: $dir = dirname(_FILE_, 2) Д«ecause вЂ_FILE_вЂ™ returns the file in the string, the parent directory is вЂ/path/to/fileвЂ™. Remember: dirname() returns the parent directory, so using вЂdirname(_DIR_)вЂ™ will return the parent directory of вЂ_DIR_вЂ™. In this case вЂ_DIR_вЂ™ is вЂ/path/to/fileвЂ™, so 2 levels higher is вЂ/pathвЂ™. LetвЂ™s assume that our script is running in /path/to/file/index.php: $dir = dirname(_DIR_, 2) Д«y using the вЂMagic ConstantвЂ™ вЂ_DIR_вЂ™ and specifying a level of 2, we are asking dirname() to return 2 levels up from the parent of вЂ_DIR_вЂ™. To use this we first pass the file or directory path as a string, and then specify how many levels we would like to move up from that directory. In PHP 7 and above we can specify how many levels we would like to move. This function will return the parent directory of whatever path we pass to it. If you are using PHP 7.0 and above then the best way to navigate from your current directory or file path is to use dirname(). We will also be using вЂMagic ConstantsвЂ™ in this post, but handily IвЂ™ve explained these a bit here. I know of two relatively simple ways to do this one using dirname() IвЂ™ve recently been helping colleagues learn PHP, and I frequently get asked how to move up and down directory levels in relation to the current file.

Get file path in php code#

To guard against these kind of issues, you can use PHPвЂ™s is_file function to see if the files exist or not before you attempt to move it.ДЄ code sample showing what this might look like.I often find that simple things are the ones most forgotten or unknown. вЂњWarning: The system cannot find the file specified.вЂќ If $currentFilePath does not exist, then the following PHP warning will be thrown. The file that you want to move must exist. In other words, if $newFilePath is the name of an existing file, then that file will be overwritten.ДЄs a result, you might need to be careful about blindly moving files. It is important to note that the rename function will overwrite existing files. The rename function will overwrite existing files! If the move is successful, then the rename will return a boolean TRUE value.PHPвЂ™s rename function takes in $currentFilePath as the first parameter ($oldname) and $newFilePath as the second parameter ($newname). In order to move the file, we used PHPвЂ™s rename function.Note that if you want to give it a different filename, then you can simply change the вЂњsample-fileвЂќ segment of the $newFilePath variable to something else. In other words, this is where we want to move it to. This is the path and filename that we want our new file to have. After that, we specified the new file path.We specified the file path of the current file.$fileMoved = rename($currentFilePath, $newFilePath) Move the file using PHP's rename function. $newFilePath = 'directory_b/sample-file.txt' $currentFilePath = 'directory_a/sample-file.txt' In this case, we have a txt file called sample-file.txt The file path of the file that we want to move. Using PHP, we are going to move sample-file.txt from directory_a to directory_b. In directory_a, we have a text file called sample-file.txt. By renaming the path to the file, we are essentially moving it.ДЇor this tutorial, we will create two directories called directory_a and directory_b. As the name suggests, this function renames a given file or directory.ДonвЂ™t let the name of the function confuse you. To do this, we will be using PHPвЂ™s native rename function. In this tutorial, we will show you how to move a file using PHP.