Using JS in HTML to invoke PHP Content-counter Instance _php tutorial

We often see the statistical code of many Web sites are displayed in the form of JS calls, let's look at how that example.

$countfile = "Num.txt";
The definition counter writes the file to the current directory under Count.txt, and then we should test whether the file can be opened

if ($fp = fopen ($countfile, "r+") = = False) {//Open file in read/write mode, exit if not open
printf ("Open file%s failed!", $countfile);
Exit
}
Else
{
If the file can open normally, read the data in the file, assuming it is 1
$count = Fread ($fp, 10);
Read 10-bit data
$count = $count + 1;
Fclose ($FP);
Close the current file
$fp = fopen ($countfile, "w+");
Open a file in overwrite mode
Fwrite ($fp, $count);
Write new data after adding 1
Fclose ($FP);
and close the file

Echo ' document.write ('. $count. ') n ';
Output data in Java Script format

}
?>
Inside the HTML file, JS calls the method.


Example Page Detach counter


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