How can I delete the contents of a file in PHP?
How can I delete the contents of a file in PHP?
PHP has an unlink() function that allows to delete a file. The PHP unlink() function takes two parameters $filename and $context. Syntax: unlink( $filename, $context );
How do I empty a text file in PHP?
php //open file to write $fp = fopen(“/tmp/file. txt”, “r+”); // clear content to 0 bits ftruncate($fp, 0); //close file fclose($fp);?>
How do you delete a specific line from a file in PHP?
php $f = “data. dat”; $term = “this”; $arr = file($f); foreach ($arr as $key=> $line) { //removing the line if(stristr($line,$term)! == false){unset($arr[$key]);break;} } //reindexing array $arr = array_values($arr); //writing to file file_put_contents($f, implode($arr));?>
How do you read and write file data in PHP explain with example?
So here are the steps required to read a file with PHP.
- Open a file using fopen() function.
- Get the file’s length using filesize() function.
- Read the file’s content using fread() function.
- Close the file with fclose() function.
How can I delete all files in a directory in PHP?
Deleting all files from a folder using PHP
- Generate a list of files using glob() method.
- Iterate over the list of files.
- Check whether the name of files is valid.
- Delete the file using unlink() method.
Which function is used to delete a file?
remove() function is a file handling function in C programming language which is used to delete a file. Please find below the description and syntax for above file handling function. remove() function is used to delete a file. In a C program, we can use remove() function as below.
How do I overwrite a file in PHP?
How to overwrite file contents with new content in PHP?
- ‘w’ -> Open for writing only; place the file pointer at the beginning of the file and truncate the file to zero length.
- ‘w+’-> Open for reading and writing; place the file pointer at the beginning of the file and truncate the file to zero length.
How do you create and read the content of a file in PHP?
php $fh = fopen(‘filename. txt’,’r’); while ($line = fgets($fh)) { // <… Do your work with the line …> // echo($line); } fclose($fh);?> This will give you a line by line read.. read the notes at php.net/fgets regarding the end of line issues with Macs.
Which function is used to delete a file in PHP?
unlink() function
The unlink() function is an inbuilt function in PHP which is used to delete files. It is similar to UNIX unlink() function. The $filename is sent as a parameter that needs to be deleted and the function returns True on success and false on failure.
How do I empty a folder in PHP?
What is the syntax of remove () a file?
Discussion Forum
| Que. | What is the current syntax of remove() a file? |
|---|---|
| b. | remove(new_file_name, current_file_name,) |
| c. | remove(() , file_name)) |
| d. | none of the mentioned |
| Answer:remove(file_name) |
How to delete a file by using PHP?
To delete a file by using PHP is very easy. Deleting a file means completely erase a file from a directory so that the file is no longer exist. PHP has an unlink () function that allows to delete a file.
How to delete a PHP file using unlink() function?
PHP has an unlink () function that allows to delete a file. The PHP unlink () function takes two parameters $filename and $context.
How to delete a file from a list of files?
Approach 1: 1 Generate a list of files using glob () method 2 Iterate over the list of files. 3 Check whether the name of files is valid. 4 Delete the file using unlink () method.
