Sending mail in PHP

first post on here so hello!!!

i’m currently having a go at this problem but am not getting that far now. Can anyone tell me where i’m goin wrong and why please?? thanks

 Code:
 <form action="sendmail.php" method="POST">

<p><b>Your name :</b> <input type=“text” name=“name”>
<br>
<b>Your e-mail :</b> <input type=“text” name=“email”>
</p>
<p><strong>Type of problem</strong>:
<select name=“problemtype” id=“problemtype”>
<option>–select problem type–</option>
<option value=“steve.gordon” selected>hardware</option>
<option value=“ian.blevins”>software</option>
</select>
<br>
<b>Message</b><br>
<textarea name=“message”></textarea>
<input type=“submit” value=“Send”>
<input type=“reset” value=“Clear”>
</p>
</form>


 PHP Code:
                   [left]             [color=#000000] [color=#0000bb]&lt;?php 

[/color][color=#ff8000]/Here we are going to declare the variables/
[/color][color=#0000bb]$name [/color][color=#007700]= [/color][color=#0000bb]$_POST[/color][color=#007700][[/color][color=#dd0000]‘name’[/color][color=#007700]];
[/color][color=#0000bb]$email [/color][color=#007700]= [/color][color=#0000bb]$_POST[/color][color=#007700][[/color][color=#dd0000]‘email’[/color][color=#007700]];
[/color][color=#0000bb]$problemtype [/color][color=#007700]= [/color][color=#0000bb]$_POST[/color][color=#007700][[/color][color=#dd0000]‘problemtype’[/color][color=#007700]];
[/color][color=#0000bb]$message [/color][color=#007700]= [/color][color=#0000bb]$_POST[/color][color=#007700][[/color][color=#dd0000]‘message’[/color][color=#007700]];

[/color][color=#ff8000]//Save visitor name and entered message into one variable:

[/color][color=#0000bb]$subject [/color][color=#007700]= [/color][color=#dd0000]“ianblevins contact form”[/color][color=#007700];
[/color][color=#0000bb]$formcontent[/color][color=#007700]=[/color][color=#dd0000]"VISITOR NAME: $name

EMAIL ADDRESS: $email

FEEDBACK: $message"[/color][color=#007700];

[/color][color=#ff8000]/mail header/
[/color][color=#0000bb]$mailheader [/color][color=#007700]= [/color][color=#dd0000]"From: $email
"[/color][color=#007700];
[/color][color=#0000bb]$mailheader [/color][color=#007700].= [/color][color=#dd0000]"MIME-Version: 1.0
"[/color][color=#007700];

[/color][color=#0000bb]$valid_emails [/color][color=#007700]= array([/color][color=#dd0000]“ian.blevins”[/color][color=#007700],[/color][color=#dd0000]“steve.gordon”[/color][color=#007700]);

if([/color][color=#0000bb]in_array[/color]color=#007700)
{
[/color][color=#0000bb]$recipient [/color][color=#007700]= [/color][color=#0000bb]$_POST[/color][color=#007700][[/color][color=#dd0000]‘problemtype’[/color][color=#007700]] . [/color][color=#dd0000]"@microcomputing.co.uk"[/color][color=#007700];

[/color][color=#0000bb]mail[/color][color=#007700]([/color][color=#0000bb]$recipient[/color][color=#007700], [/color][color=#0000bb]$subject[/color][color=#007700], [/color][color=#0000bb]$formcontent[/color][color=#007700], [/color][color=#0000bb]$mailheader[/color][color=#007700]); 

}
else
{
[/color][color=#0000bb]mail[/color][color=#007700]([/color][color=#0000bb]$recipient[/color][color=#007700], [/color][color=#0000bb]$subject[/color][color=#007700], [/color][color=#0000bb]$formcontent[/color][color=#007700], [/color][color=#0000bb]$mailheader[/color][color=#007700]) or die([/color][color=#dd0000]“Message not sent. Please press the back button and try again!”[/color][color=#007700]);
}

[/color][color=#0000bb]?>[/color] [/color] [/left]