Binary-safe file write
Syntax
fwrite ( resource $handle , string $string [, int $length ] ) : int
Parameters
handleA file system pointer resource that is typically created using fopen().
stringThe string that is to be written.
lengthIf the length argument is given, writing will stop after length bytes have been written or the end of string is reached, whichever comes first.
Note that if the length argument is given, then the magic_quotes_runtime configuration option will be ignored and no slashes will be stripped from string.
Return
Returns the number of bytes written, or FALSE on error.
Examples
1 · handle string
<?
$filename = $_SERVER["DOCUMENT_ROOT"] . "/assets/txt/file.txt";
$mode = "w";
$handle = fopen($filename, $mode);
$string = "Hello";
$return = fwrite($handle, $string);
var_export($return);
fclose($handle);
?>5
2 · length
<?
$filename = $_SERVER["DOCUMENT_ROOT"] . "/assets/txt/file.txt";
$mode = "w";
$handle = fopen($filename, $mode);
$string = "Hello";
$length = 2;
$return = fwrite($handle, $string, $length);
var_export($return);
fclose($handle);
?>2
