Using JS to invoke PHP content in an HTML Web page _php tutorial

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

$countfile = "Num.txt";

The definition counter writes the file to the current directory under Num.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. ') ';

Output data in JavaScript form

}

?>

The above content is saved to filecount.php, and the Num.txt is established in the same directory.

Inside the HTML file, JS calls the method.

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