The SplFileObject::fwrite() function is an inbuilt function of Standard PHP Library (SPL) in PHP which is used to write to the file.
Syntax:
int SplFileObject::fwrite( $str, $length )
Parameters: This function accept two parameters as mention above and describe below:
- $str: It is used to specify the string which need to write to the file.
- $length: It is an optional parameter. If it is given then file writing will stop after a specified length.
Return values: This function returns the number of bytes written to the file and 0 on error.
Below Programs illustrate the SplFileObject::fwrite() function in PHP:
Program 1:
<?php   // Create a file named "gfg.txt" if not exist $gfg = new SplFileObject("gfg.txt", "w+");   // Write data in gfg.txt $gfg->fwrite("neveropen a CS Portal");   // Open file again in read mode $gfg = new SplFileObject("gfg.txt");   // Print result after written while (!$gfg->eof()) {     echo $gfg->fgetc(); } ?> |
Output:
neveropen a CS Portal
Program 2:
<?php    // Create an Array $GFG = array(     "dummy.txt",     "gfg.txt",     "frame.txt"    );    // Creating Spl Object foreach ($GFG as &$arr) {     $gfg = new SplFileObject($arr, "w+");            // Write data in file     $gfg->fwrite("neveropen a CS Portal for Geeks");            // Open file again in read mode     $gfg = new SplFileObject("gfg.txt");            // Print result after written     while (!$gfg->eof()) {         echo $gfg->fgetc();     }           echo "</br>"; } ?> |
Output:
neveropen a CS Portal for Geeks neveropen a CS Portal for Geeks neveropen a CS Portal for Geeks
Reference: http://php.net/manual/en/splfileobject.fwrite.php
