源代码结局什么意思 一个简单计数器的源代码

$memo_file="phpcount/vst.txt";
if ($phpxcount$REMOTE_ADDR){
$visits = file($memo_file);
$number_of_last_visit = $visits[0];
$number_of_new_visit = ++$number_of_last_visit;
$fp = fopen($memo_file, "w");
$fw = fwrite($fp, $number_of_new_visit);
fclose($fp);
$len_str = strlen($number_of_new_visit);
for($i=(0);$i$numbers_exploded = substr($number_of_new_visit,$i,1);
$output_str = $output_str . "";
}
}else{
$visits = file($memo_file);
$number_of_last_visit = $visits[0];
$number_of_new_visit = $number_of_last_visit;
$fp = fopen($memo_file, "w");
$fw = fwrite($fp, $number_of_new_visit);
fclose($fp);
$len_str = strlen($number_of_new_visit);
for($i=(0);$i$numbers_exploded = substr($number_of_new_visit,$i,1);
$output_str = $output_str . "";
}
}
echo $output_str;
?>

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