Installing a PEAR Package - More Mail!
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Once the user clicks on the “Send Message” button, the PHP code at the top of the page checks to see if the form has been submitted. If so, it immediately requires the mail class:
<?php
//is form submitted
if(isset($_POST['key'])){
require "Mail.php";
Then it checks to see that all the required information is included in the submitted form. Remember that the mail() function requires three pieces of information, the subject, body and recipient address. So it is important that we ensure that those values are there:
//collect the information
$from=$email;
$cc=$_POST['cc'];
$bcc=$_POST['bcc'];
The empty() function that is provided by PHP is used to check whether or not the form variables contain any values. If the form variables are empty, a error message is set up stating so:
if(empty($_POST['tos'])){
$error=true;
}else{
$to=$_POST['tos'];
}
if(empty($_POST['sub'])){
$error=true;
}else{
$subject=$_POST['sub'];
}
if(empty($_POST['msg'])){
$error=true;
}else{
$msg=$_POST['msg'];
}
The next code checks to see if the user included a attachment. You probably noticed a browse button on the HTML form that allows the user to search for a file on the local system for attachment to the mail message. The logic for this check works like so: it first checks to see if the user included an attachment by searching the FILE array. If a file is found, it is first stored in a variable called filename, and then it is attached to the headers section of the Mail message:
//check if the an attachment is present
if(isset($_FILES['userfile']['name'])){
$attachment = $_FILES['userfile']['tmp_name'], $_FILES['userfile']['name'];
$headers =“Content-disposition: attachment;
$filename=.$attachment."n";
$headers=.Content-Transfer-Encoding: base64n”;
}
Finally, if no errors occurred in the script, we send the message using the mail class’s factory method:
if(!$error){
$mail = Mail::factory('mail');
$mail->send($to, $headers, $msg);
}
If there is an error in sending the message, the appropriate message is printed out:
if(!$res){
echo "Mail error occurred";
}
}
?>
To uninstall these packages, you simply type the following at the command prompt:
pear uninstall packagename
If the package that you are using has been updated, you simply type:
pear upgrade packagename
In the next article we will start to build a complete Content Management System using PEAR::DB.
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