PHP jquery ajax实现即时聊天功能

作者：袖梨 2022-06-24
代码如下 复制代码
index.html




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data.php
header("Expires: Mon, 26 Jul 1997 05:00:00 GMT");
header("Last-Modified: ".gmdate("D, d M Y H:i:s")." GMT");
header("Cache-Control: no-cache, must-revalidate");
header("Pramga: no-cache");
set_time_limit(0);
$get = $_GET['action'];
$type = $_GET['type'];
$file = $type.'.txt';
if(isset($get) && isset($type) && file_exists($file)){
switch($get){
case 'first':
$chat = file_get_contents($file);
$json=array(
'status' => 200,
'time' => gmdate("s"),
'chat' => $chat,
);
echo json_encode($json);
break; www.111com.net
case 'while':
$oldsize = filesize($file);
$newsize = filesize($file);
while(true){
if($oldsize!=$newsize){
$chat = file_get_contents($file);
$json=array(
'status' => 200,
'time' => gmdate("s"),
'chat' => $chat,
);
echo json_encode($json);
exit;
}
clearstatcache();
$newsize = filesize($file);
usleep(10000);
}
break;
}
}
?>
send.php
$json = array();
$txt = isset($_GET['txt'])?$_GET['txt']:'';
$type = isset($_GET['type'])?$_GET['type']:'';
if($txt!=''){
$file = $type.".txt";
if(file_exists($file)){
$fp = fopen($file,"a");
$str = "rn".'Admin：'.$txt;
//$str = $txt."n"//linux;
fwrite($fp, $str);
fclose($fp);
$json['status']=200;
echo json_encode($json);
exit;
}
}
?>

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