![]() ![]() In the above example, if the "note.txt" file doesn't exist PHP will automatically create it and write the data. So, to avoid these error messages you should always implement a simple check whether a file or directory exists or not before trying to access it, with the PHP file_exists() function. If you try to open a file that doesn't exist, PHP will generate a warning message. Open the file for reading and writing otherwise it has the same behavior as 'x'. If the file does not exist, PHP will attempt to create it. Return FALSE and generates an error if the file already exists. Preserves file content by writing to the end of the file. If the file does not exist, PHP will attempt to create it.Īppend. Open the file for reading and writing and clears the contents of file. Below is an example of removing/deleting a file using this function.Open the file for writing only and clears the contents of file. The unlink() function delete files or directories. Below is an example on how to rename a file. The rename() function modifies the name of the file. $file = fopen($f, "w") or die("ERROR: Cannot open the file.") // Open the file for writingįwrite($file, $content) or die ("ERROR: Cannot write to file.") // Write data to the file $content = "The quick brown fox jumps over the lazy dog." // String of data to be written This function takes two parameters - the file handle and the string of data that is to be written. The basic syntax is: fwrite(file handle, string) Using the PHP fwrite() function, you can write data to a file or add to an existing file. $content = file($f) or die("ERROR: Cannot open the file.") This is similar to the file_get_contents() function. The file() function returns the file contents as an array of lines. $content = file_get_contents($f) or die("ERROR: Cannot open the file.") // Reading the entire file into a stringĮcho $content // Display the file content ![]() This is another way to read the whole content of a file without needing to open it. The file_get_contents() function accepts the name and path to a file, and reads the entire file into a string variable. Readfile($f) or die("ERROR: Cannot open the file.") // Reads and outputs the entire file The readfile() function allows reading the contents of a file without needing to open it. $content = fread($file, filesize($f)) // Reading the entire fileĮcho $content // Output: "The quick brown fox jumps over the lazy dog." Using this function together with the fread() function, reads the entire content of the file. ![]() The filesize() function returns the size of the file in bytes. $content = fread($file, "20") // Read fixed number of bytes from the fileĮcho $content // Output: "The quick brown fox" Below is an example of the fread() function used to read from a file, myfile.txt with the following content: "The quick brown fox jumps over the lazy dog."
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