How to create a text file in php?

Submitted by: Muhammad
$filename = "/home/user/guest/newfile.txt";
$file = fopen( $filename, "w" );
if( $file == false )
{
echo ( "Error in opening new file" ); exit();
}
fwrite( $file, "This is a simple testing global guideline filen" );
fclose( $file );
Submitted by: Muhammad

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