Detailed description Full-featured PHP mail-sending code with detailed description

class Email {
//---Set global variables
var $mailTo = ""; // Recipient
var $mailCC = ""; // CC
var $mailBCC = ""; // Secret CC
var $mailFrom = ""; // Sender
var $mailSubject = ""; // Subject
var $mailText = ""; // Text format of the letter body
var $mailHTML = " "; // The body of the letter in html format
var $mailAttachments = ""; // Attachments
/* Function setTo($inAddress): The address used to process the email Parameter $inAddress
Contains one or more strings, email Address variable, use commas to separate multiple email addresses
The default return value is true
************************************ ****************************/
function setTo($inAddress){
//--Use the explode() function according to "," Split the email address
$addressArray = explode( ",",$inAddress);
//--Check the validity of the email address through loop
for($i=0;$icheckEmail($addressArray[$i])==false) return false; }
//--All legal email addresses are stored in the array
$this->mailTo = implode($addressArray, ",");
return true; }
/**************************************************
Function setCC($inAddress) Sets the email address of the carbon copy person
The parameter $inAddress is a string containing one or more email addresses, an email address variable,
Use commas to separate multiple email addresses The default return value is true
**** *************************************************** ********/
function setCC($inAddress){
//--Use the explode() function to edit the email address based on "," Split
$addressArray = explode( ",",$inAddress);
//--Check the validity of the email address through loop
for($i=0;$icheckEmail($addressArray[$i])==false) return false; }
//--All legal email addresses are stored in the array
$this->mailCC = implode($ addressArray, ",");
return true; }
/***************************************************
Function setBCC($inAddress) sets the secret carbon copy address. The parameter $inAddress is a string containing one or more
email addresses, an email address variable, and uses commas to separate multiple email addresses. The default return value is
true
**** **************************************/
function setBCC($inAddress){
//--Use the explode() function to split the email address based on ","
$ addressArray = explode( ",",$inAddress);
//--Check the validity of the email address through loop
for($i=0;$i{ if ($this->checkEmail($addressArray[$i])==false)
return false;
}
//--All legal email addresses are stored in the array
$this->mailBCC = implode($ addressArray, ",");
return true;
}
/***************************************************** *************
Function setFrom($inAddress): Set the sender address parameter $inAddress to include the email
The default return value of the address string is true
************ ********************************/
function setFrom($inAddress){
if($this->checkEmail($inAddress)){
$this-> ;mailFrom = $inAddress;
return true;
} return false; }
/************************
The function setSubject($inSubject) is used to set the email subject parameter $inSubject to a string,
The default return value is true
**** ****************************************/
function setSubject($inSubject){
if(strlen(trim($inSubject)) > 0){
$this->mailSubject = ereg_replace( "n", "",$inSubject);
return true; }
return false; }
/*****************************************************
Function setText($inText) sets the email body parameter in text format $inText is the text content by default
The default return value is true
****************************** *****************/
function setText($inText){
if( strlen(trim($inText)) > 0){
$this->mailText = $inText;
return true; }
return false;
}
/************************************
Function setHTML($inHTML) sets the email body parameter $inHTML in html format to html Format,
The default return value is true
*****************************************/
function setHTML($inHTML){
if(strlen(trim($inHTML)) > 0){
$this->mailHTML = $inHTML;
return true; }
return false; }
/**************************
Function setAttachments($inAttachments) sets the attachments of the email. Parameter $inAttachments
is a string that contains the directory, and can also contain multiple files. Comma separates and the default return value is true
************************************************ **/
function setAttachments($inAttachments){
if(strlen(trim($inAttachments)) > 0){
$this->mailAttachments = $inAttachments;
return true; }
return false; }
/*********************************
Function checkEmail($inAddress): We have already called this function before, mainly
Used to check the legitimacy of email addresses
*****************************************/
function checkEmail($inAddress){
return (ereg( "^[^@ ]+@([a-zA-Z0-9-]+ .)+([a-zA-Z0-9-]{2}|net|com|gov|mil|org|edu|int)$",$inAddress));
}
/***************************************************
Function loadTemplate ($inFileLocation,$inHash,$inFormat) reads the temporary file and
replaces the useless information parameter $inFileLocation is used to locate the directory of the file
$inHash is used to store the temporary value $inFormat is used to place the email body
****** *************************************************** *** /
function loadTemplate($inFileLocation,$inHash,$inFormat){
/* For example, the email contains the following content: Dear ~!UserName~,
Your address is ~!UserAddress~ */
//--where "~! "is the start mark"~" is the end mark
$templateDelim = "~";
$templateNameStart = "!";
//--Find these places and replace them
$templateLineOut = ""; // --Open temporary file
if($templateFile = fopen($inFileLocation, "r")){
while(!feof($templateFile)){
$templateLine = fgets($templateFile,1000);
$templateLineArray = explode ($templateDelim,$templateLine);
for( $i=0; $i//--Find the starting position
if(strcspn($templateLineArray[$i], $templateNameStart)==0){
//--Replace the corresponding value
$hashName = substr($templateLineArray[$i],1);
//--Replace the corresponding value
$templateLineArray[$i] = ereg_replace($hashName,(string)$inHash[$hashName],$hashName);
}
}
//--Output character array and overlay
$templateLineOut .= implode($templateLineArray, "");
} / /--Close the file fclose($templateFile);
//--Set the body format (text or html)
if( strtoupper($inFormat)== "TEXT" )
return($this->setText($templateLineOut ));
else if( strtoupper($inFormat)== "HTML" )
return($this->setHTML($templateLineOut));
} return false;
}
/*****************************************
Function getRandomBoundary($offset) returns a random Boundary value
The parameter $offset is an integer – used for multi-pipeline calls and returns an md5() encoded string
****************************** *****************/
function getRandomBoundary($offset = 0){
//--Random number generation
srand(time()+$offset);
//--Return md5 encoded 32-bit character string
return ( "-- --".(md5(rand()))); }
/******************************************
Function: getContentType($inFileName) Used to determine the type of attachment
************************************************ ***/
function getContentType($inFileName){
//--Remove path
$inFileName = basename($inFileName);
//--Remove files without extension
if(strrchr($inFileName, ".") == false){
return "application/octet-stream";
} 
//--提区扩展名并进行判断 
$extension = strrchr($inFileName, "."); 
switch($extension){ 
case ".gif": return "image/gif"; 
case ".gz": return "application/x-gzip"; 
case ".htm": return "text/html"; 
case ".html": return "text/html"; 
case ".jpg": return "image/jpeg"; 
case ".tar": return "application/x-tar"; 
case ".txt": return "text/plain"; 
case ".zip": return "application/zip"; 
default: return "application/octet-stream"; 
} 
return "application/octet-stream"; 
} 
/**************************************************
The function formatTextHeader converts the text content Add text file header
************************************************ **********/ 
function formatTextHeader(){ $outTextHeader = ""; 
$outTextHeader .= "Content-Type: text/plain; 
charset=us-asciin"; 
$outTextHeader .= "Content-Transfer-Encoding: 7bitnn"; 
$outTextHeader .= $this->mailText. "n"; 
return $outTextHeader; 
} /************************************************
Function formatHTMLHeader( )Add the html file header to the main content of the email
****************************************** ****/ 
function formatHTMLHeader(){ 
$outHTMLHeader = ""; 
$outHTMLHeader .= "Content-Type: text/html; 
charset=us-asciin"; 
$outHTMLHeader .= "Content-Transfer-Encoding: 7bitnn"; 
$outHTMLHeader .= $this->mailHTML. "n"; 
return $outHTMLHeader; 
} 
/**************************************
The function formatAttachmentHeader($inFileLocation) identifies the attachment in the email
*** *******************************/ 
function formatAttachmentHeader($inFileLocation){ 
$outAttachmentHeader = ""; 
//--用上面的函数getContentType($inFileLocation)得出附件类型 
$contentType = $this->getContentType($inFileLocation); 
//--如果附件是文本型则用标准的7位编码 
if(ereg( "text",$contentType)){ 
$outAttachmentHeader .= "Content-Type: ".$contentType. ";n"; 
$outAttachmentHeader .= ' name="'.basename($inFileLocation). '"'. "n"; 
$outAttachmentHeader .= "Content-Transfer-Encoding: 7bitn"; 
$outAttachmentHeader .= "Content-Disposition: attachment;n"; 
$outAttachmentHeader .= ' filename="'.basename($inFileLocation). '"'. "nn"; 
$textFile = fopen($inFileLocation, "r"); 
while(!feof($textFile)){ 
$outAttachmentHeader .= fgets($textFile,1000); 
} 
//--关闭文件 fclose($textFile); 
$outAttachmentHeader .= "n"; 
} 
//--非文本格式则用64位进行编码 
else{ $outAttachmentHeader .= "Content-Type: ".$contentType. ";n"; 
$outAttachmentHeader .= ' name="'.basename($inFileLocation). '"'. "n"; 
$outAttachmentHeader .= "Content-Transfer-Encoding: base64n"; 
$outAttachmentHeader .= "Content-Disposition: attachment;n"; 
$outAttachmentHeader .= ' filename="'.basename($inFileLocation). '"'. "nn"; 
//--调用外部命令uuencode进行编码 
exec( "uuencode -m $inFileLocation nothing_out",$returnArray); 
for ($i = 1; $i<(count($returnArray)); $i++){ 
$outAttachmentHeader .= $returnArray[$i]. "n"; 
} 
} return $outAttachmentHeader; 
}
/********************************
Function send() is used to send emails, and the return value is true if sent successfully
***** *******************************/
function send(){
//--Set the email header to empty
$mailHeader = "";
//--Add a carbon copy person
if($this->mailCC != "")
$mailHeader .= "CC: ".$this->mailCC. "n";
//--Add secret carbon copy person
if($this->mailBCC != "")
$mailHeader .= "BCC: ".$this->mailBCC. "n";
//--Add sender
if($this->mailFrom != "")
$mailHeader .= " FROM: ".$this->mailFrom. "n";
//---------------------------Mail format--- -----------------------------
//--Text format
if($this->mailText != "" && $this ->mailHTML == "" && $this->mailAttachments == ""){
return mail($this->mailTo,$this->mailSubject,$this->mailText,$mailHeader);
}
//--html or text format
else if($this->mailText != "" && $this->mailHTML != "" && $this->mailAttachments == ""){
$bodyBoundary = $this->getRandomBoundary();
$textHeader = $this->formatTextHeader();
$htmlHeader = $this->formatHTMLHeader();
//--Set MIME-version
$mailHeader .= "MIME-Version: 1.0n";
$mailHeader .= "Content-Type: multipart/alternative;n";
$mailHeader .= ' boundary="'.$bodyBoundary. '"';
$mailHeader . = "nnn";
//--Add email body and boundary
$mailHeader .= "--".$bodyBoundary. "n";
$mailHeader .= $textHeader;
$mailHeader .= "--". $bodyBoundary. "n";
//--Add html tag
$mailHeader .= $htmlHeader;
$mailHeader .= "n--".$bodyBoundary. "--";
//--Send email
return mail($this->mailTo,$this->mailSubject, "",$mailHeader);
}
//--Text plus html plus attachment
else if($this->mailText != "" && $this->mailHTML != "" && $this->mailAttachments != ""){
$attachmentBoundary = $this->getRandomBoundary();
$mailHeader .= "Content-Type: multipart/mixed ;n";
$mailHeader .= ' boundary="'.$attachmentBoundary. '"'. "nn";
$mailHeader .= "This is a multi-part message in MIME format.n";
$mailHeader . = "--".$attachmentBoundary. "n";
$bodyBoundary = $this->getRandomBoundary(1);
$textHeader = $this->formatTextHeader();
$htmlHeader = $this->formatHTMLHeader ();
$mailHeader .= "MIME-Version: 1.0n";
$mailHeader .= "Content-Type: multipart/alternative;n";
$mailHeader .= ' boundary="'.$bodyBoundary. '" ';
$mailHeader .= "nnn";
$mailHeader .= "--".$bodyBoundary. "n";
$mailHeader .= $textHeader;
$mailHeader .= "--".$bodyBoundary. " n";
$mailHeader .= $htmlHeader;
$mailHeader .= "n--".$bodyBoundary. "--";
//--Get attachment value
$attachmentArray = explode( ",",$this ->mailAttachments);
//--Loop according to the number of attachments
for($i=0;$i//--Split $mailHeader .= " n--".$attachmentBoundary. "n";
//--Attachment information
$mailHeader .= $this->formatAttachmentHeader($attachmentArray[$i]);
}
$mailHeader .= "--" .$attachmentBoundary. "--";
return mail($this->mailTo,$this->mailSubject, "",$mailHeader);
}
return false;
}
}
?>
Use Method:

Copy the code The code is as follows:

Include “email.class”
$mail->setTo("a@a.com"); //Recipient
$mail-> setCC("b@b.com,c @c.com"); //CC
$mail-> setCC("d@b.com,e@c.com"); //Secret CC
$mail->setFrom("f@ f.com");//Sender
$mail->setSubject("Subject"); //Subject
$mail->setText("Text Format");//Sending text format can also be a variable
$mail->setHTML("html format");//Sending html format can also be a variable
$mail->setAttachments("c:a.jpg");//To add attachments, the path needs to be indicated
$ mail->send(); //Send mail
?>

The above has introduced the detailed instructions. The fully functional PHP code for sending emails is attached with detailed instructions, including detailed instructions. I hope it will be helpful to friends who are interested in PHP tutorials.