PHP fwrite() Function
Complete PHP Filesystem Reference
Definition and Usage
The fwrite() writes to an open file.
The function will stop at the end of the file or when it reaches the specified length, whichever comes first.
This function returns the number of bytes written, or FALSE on failure.
Syntax
fwrite(file,string,length)
| Parameter | Description |
|---|---|
| file | Required. Specifies the open file to write to |
| string | Required. Specifies the string to write to the open file |
| length | Optional. Specifies the maximum number of bytes to write |
Tips and Notes
Tip: This function is binary-safe (meaning that both binary data, like images, and character data can be written with this function).
Example
<?php
$file = fopen("test.txt","w");
echo fwrite($file,"Hello World. Testing!");
fclose($file);
?>
The output of the code above will be:
21
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