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php防止页面刷新代码

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PHP中文网Original
2016-05-25 17:15:451843browse

php防止页面刷新代码 

<?php 
session_start(); 
$allow_sep = "30000"; 
if (isset($_SESSION["post_sep"])) 
{ 
if (time() - $_SESSION["post_sep"] < $allow_sep) 
{ 
exit("请不要反复刷新"); 
} 
else 
{ 
$_SESSION["post_sep"] = time(); 
} 
} 
else 
{ 
$_SESSION["post_sep"] = time(); 
} 
?>

                   

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