PHP method of using text to count visits PHP timing method PHP encapsulation method PHP system authorizer

The example in this article describes how PHP uses text to count visits. Share it with everyone for your reference, as follows:

Method 1:

$fp = fopen("counter.txt", "r+");
while(!flock($fp, LOCK_EX)) { // acquire an exclusive lock
  // waiting to lock the file
}
$counter = intval(fread($fp, filesize("counter.txt")));
$counter++;
ftruncate($fp, 0);   // truncate file
fwrite($fp, $counter); // set your data
fflush($fp);      // flush output before releasing the lock
flock($fp, LOCK_UN);  // release the lock
fclose($fp);

Method 2:

counter.php file:

<&#63;php
/* counter */
//opens countlog.txt to read the number of hits
$datei = fopen("countlog.txt","r");
$count = fgets($datei,1000);
fclose($datei);
$count=$count + 1 ;
echo "$count" ;
echo " hits" ;
echo "\n" ;
// opens countlog.txt to change new hit number
$datei = fopen("countlog.txt","w");
fwrite($datei, $count);
fclose($datei);
&#63;>

Usage:

<&#63;php
include("counter.php");
&#63;>

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The above introduces the method of using text to count visits in PHP, including the methods of PHP. I hope it will be helpful to friends who are interested in PHP tutorials.