DisconnectEx允许您断开套接字并将其重新用于新的基于套接字的连接。这样就可以构建套接字池来提高性能。
POSIX有没有相应的东西？从它的外观来看，它没有一个。您被迫关闭套接字（使用<?php
if($_POST && isset($_FILES['file']))
{
$recipient_email = "mymail@gmail.com"; //recepient
$from_email = "mymail2@gmail.com"; //from email using site domain.
$subject = "Attachment email from your website!"; //email subject line
$sender_name = filter_var($_POST["s_name"], FILTER_SANITIZE_STRING); //capture sender name
$sender_number = filter_var($_POST["s_number"], FILTER_SANITIZE_STRING); //capture sender number
$sender_email = filter_var($_POST["s_email"], FILTER_SANITIZE_STRING); //capture sender email
$sender_message = filter_var($_POST["s_message"], FILTER_SANITIZE_STRING); //capture message
$attachments = $_FILES['file'];
//php validation
if(strlen($sender_name)<4){
die('Name is too short or empty');
}
if(strlen($sender_number)<4){
die('Number is too short or empty');
}
if (!filter_var($sender_email, FILTER_VALIDATE_EMAIL)) {
die('Invalid email');
}
if(strlen($sender_message)<4){
die('Too short message! Please enter something');
}
$file_count = count($attachments['name']); //count total files attached
$boundary = md5("");
if($file_count > 0){ //if attachment exists
//header
$headers = "MIME-Version: 1.0\r\n";
$headers .= "From:".$from_email."\r\n";
$headers .= "Reply-To: ".$sender_email."" . "\r\n";
$headers .= "Content-Type: multipart/mixed; boundary = $boundary\r\n\r\n";
//message text
$body = "--$boundary\r\n";
$body .= "Content-Type: text/plain; charset=ISO-8859-1\r\n";
$body .= "Content-Transfer-Encoding: base64\r\n\r\n";
$body .= chunk_split(base64_encode($sender_name)) . "<br />";
$body .= chunk_split(base64_encode($sender_number)) . "<br />";
$body .= chunk_split(base64_encode($sender_message)) . "<br />";
//attachments
for ($x = 0; $x < $file_count; $x++){
if(!empty($attachments['name'][$x])){
if($attachments['error'][$x]>0) //exit script and output error if we encounter any
{
$mymsg = array(
1=>"The uploaded file exceeds the upload_max_filesize directive in php.ini",
2=>"The uploaded file exceeds the MAX_FILE_SIZE directive that was specified in the HTML form",
3=>"The uploaded file was only partially uploaded",
4=>"No file was uploaded",
6=>"Missing a temporary folder" );
die($mymsg[$attachments['error'][$x]]);
}
//get file info
$file_name = $attachments['name'][$x];
$file_size = $attachments['size'][$x];
$file_type = $attachments['type'][$x];
//read file
$handle = fopen($attachments['tmp_name'][$x], "r");
$content = fread($handle, $file_size);
fclose($handle);
$encoded_content = chunk_split(base64_encode($content)); //split into smaller chunks (RFC 2045)
$body .= "--$boundary\r\n";
$body .="Content-Type: $file_type; name=" . $file_name ."\r\n";
$body .="Content-Disposition: attachment; filename=" . $file_name ."\r\n";
$body .="Content-Transfer-Encoding: base64\r\n";
$body .="X-Attachment-Id: ".rand(1000,99999)."\r\n\r\n";
$body .= $encoded_content;
}
}
}else{ //send plain email otherwise
$headers = "From:".$from_email."\r\n".
"Reply-To: ".$sender_email. "\n" .
"X-Mailer: PHP/" . phpversion();
$body = $sender_name. "\n";
$body = $sender_number. "\n";
$body = $sender_message. "\n";
}
$sentMail = @mail($recipient_email, $subject, $body, $headers);
if($sentMail) //output success or failure messages
{
header("Location: index.php"); /* Redirect browser */
exit();
}else{
header("Location: index.php"); /* Redirect browser */
}
}
?>
或closesocket）并在需要时请求新套接字。也许在UNIX操作系统中创建套接字是如此便宜，不值得实现这种功能，但我无法证明它。