WordPress: pure code to realize the online population statistics function of the website

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November 28, 2017 00:15:19 WordPress comment five hundred and four Reading mode

WordPress: pure code realizes the online population statistics function of the website. Add the following code to the place you want to add. The robin Begin theme can be directly added to the enhanced text gadget. After adding, a maplers.dat file will be automatically created. Please do not delete it.

<? php
//First of all, you must have the permission to read and write files. The first access may not be displayed, but it can be refreshed normally
$online_log = "maplers.dat" ; //Save the file of the number of people to the root directory,
$timeout = 30; //If the author is not touched within 30 seconds, it is considered offline
$entries = file( $online_log );
$temp = array ();
for ( $i =0; $i < count ( $entries ); $i ++){
$entry = explode ( "," ,trim( $entries [ $i ]));
if (( $entry [0] != getenv ('REMOTE_ADDR')) && ( $entry [1] > time())) {
array_push ( $temp , $entry [0]. "," . $entry [1]. "\n" ); //Get the information of other browsers, remove the timeout, and save it in $temp
}}
array_push ( $temp , getenv ('REMOTE_ADDR'). "," .(time() + ( $timeout )). "\n" ); //Update viewer's time
$maplers = count ( $temp ); //Calculate the number of people online
$entries = implode( "" , $temp );
//Write File
$fp = fopen ( $online_log , "w" );
flock ( $fp ,LOCK_EX); //Flock() does not work properly in NFS and other network file systems
fputs ( $fp , $entries );
flock ( $fp ,LOCK_UN);
fclose( $fp );
echo "Number of people online:" . $maplers . People ;
?>

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