复制代码 代码如下:

<?php

function set_cronology($name,$value,$duration=7){

$duration=time()+(3600*24*$duration);

$max_stored_values=5;

if(isset($_COOKIE[$name])){

foreach($_COOKIE[$name] as $prop_crono=>$val_crono){

if($val_crono==$value)

return;

}

if($prop_crono<$max_stored_values)

setcookie($name.'['.($prop_crono+1).']',$value,$duration);

else{

array_shift($_COOKIE[$name]);

setcookie("$name[$max_stored_values]",$value,$duration);

}

}else

setcookie($name.'[0]',$value,$duration);

return;

}

?>