Why does the php not work for my form? [closed]

Question

I have been trying to make this form validate before sending an email to my company. It will not validate the form, it will just send it whenever someone clicks submit. No validation is happening, I don't know what to do about this.

Here is a little of the form

<tr>
<td><label for="reason3">Reason for Leaving?</label></td>
<td><input type="text" id="reason3" name="reason3" class="c3"></td>
</tr>
<tr>
<td colspan="2">
<hr size="1.5" color="#000000" noshade></td>
</tr>
<tr>
<td><label for="maywe">May we contact the employers listed above?<br>
If not, indicate which you do not wish us to contact:</label></td>
<td><input type="text" id="maywe" name="maywe" class="c3"></td>
</tr>
<tr>
<td><label for="additional">Any additonal information you would like us to<br>
consider when reviewing your application?</label></td>
<td><input type="text" id="additional" name="additional" class="c3"></td>
</tr>
<tr>
<td colspan="2">
<hr size="1.5" color="#000000" noshade></td>
</tr>
<tr>
<td colspan="2">
<div class="c2">
<hr size="1.5" color="#000000" noshade>
        The above information is true and complete to the best of my knowledge. Should I become<br>
employed by <a href="http://www.creativeurethanes.com/">Creative Urethanes, Inc.,</a> any false statements on this application may be<br>
considered sufficient cause for dismissal.<br>
        I understand that filling out this application does not indicate that there are necessarily any<br>
vacant positions at this time, nor does it in any way obligate this Company.<br>
        I acknowledge that I have read Creative Urethanes' <a href="Memo.html">Memo on Right to Know</a>. <input type="checkbox" name="Yes" value="Yes"><span class="c1"><sup><i>*</i></sup></span><br>
<br></div>
</td>
</tr>
<tr>
<td colspan="2">
<hr size="1.5" color="#000000" noshade></td>
</tr>
<tr>
<td colspan="2">Sign electronically with your full name and SSN.</td>
</tr>
<tr>
<td><label for="electronicsignfn"><u>Full</u> <u>Name</u><span class="c1"><sup><i>*</i></sup></span></label></td>
<td><input type="text" id="electronicsignfn" name="electonicsignfn" class="c3"></td>
</tr>
<tr>
<td><label for="electronicsignssn"><u>S.S.N.</u><span class="c1"><sup><i>*</i></sup></span></label></td>
<td><input type="text" id="electronicsignssn" name="electronicsignssn" class="c3"></td>
</tr>
<tr>
<td><label for="emailaddress"><u>Email</u> <u>Address</u><span class="c1"><sup><i>*</i></sup></span></label></td>
<td><input type="text" id="emailaddress" name="emailaddress"></td>
</tr>
<tr>
<td colspan="2">
<hr size="1.5" color="#000000" noshade></td>
</tr>
<tr>
<td><input type="submit" id="field89" name="field89" class="c3" value="Submit"></td>
<td><input type="reset" id="field90" name="field90" class="c3" value="Reset"></td>
</tr>
</table>
</form>
</body>
</html>

Here is the php

<?php
if ($_POST['submitted']==1) {
$errormsg = "";
if ($_POST[first_name]){
$first_name = $_POST[first_name];
}
else{
$errormsg = "Please enter your first name";
}
if ($_POST[last_name]){
$last_name = $_POST[last_name];
}
else{
$errormsg = "Please enter your last name";
}
if ($_POST[ssn]){
$ssn = $_POST[ssn];
}
else{
$errormsg = "Please enter your Social Security Number";
}
if ($_POST[phone]){
$phone = $_POST[phone];
}
else{
$errormsg = "Please enter your phone number";
}
if ($_POST[address]){
$address = $_POST[address];
}
else{
$errormsg = "Please enter your address";
}
if ($_POST[city]){
$city = $_POST[city];
}
else{
$errormsg = "Please enter your city";
}
if ($_POST[state]){
$state = $_POST[state];
}
else{
$errormsg = "Please select your state";
}
if ($_POST[zip]){
$zip = $_POST[zip];
}
else{
$errormsg = "Please enter your 5 digit zip code";
}
if ($_POST[position]){
$position = $_POST[position];
}
else{
$errormsg = "Please enter N/A if open for discussion";
}
if ($_POST[wage]){
$wage = $_POST[wage];
}
else{
$errormsg = "Please enter 0.00 if open for discussion";
}
if ($_POST[Emergencycontactname]){
$Emergencycontactname = $_POST[Emergencycontactname];
}
else{
$errormsg = "Please enter your emergency contact's name";
}
if ($_POST[Emergencycontactaddress]){
$Emergencycontactaddress = $_POST[address];
}
else{
$errormsg = "Please enter your emergency contact's address";
}
if ($_POST[Emergencycontactcity]){
$Emergencycontactcity = $_POST[Emergencycontactcity];
}
else{
$errormsg = "Please enter your emergency contact's city";
}
if ($_POST[Emergencycontactstate]){
$Emergencycontactstate = $_POST[Emergencycontactstate];
}
else{
$errormsg = "Please select your Emergency contact's state";
}
if ($_POST[Emergencycontactzip]){
$Emergencycontactzip = $_POST[Emergencycontactzip];
}
else{
$errormsg = "Please enter your emergency contact's 5 digit zip code";
}
if ($_POST[Emergencycontactphone]){
$Emergencycontactphone = $_POST[Emergencycontactphone];
}
else{
$errormsg = "Please enter your emergency contact's phone number";
}
if ($_POST[hightest]){
$highest = $_POST[highest];
}
else{
$errormsg = "Please enter your highest level of education";
}
if ($_POST[degree]){
$degree = $_POST[degree];
}
else{
$errormsg = "Please enter N/A if none";
}
if ($_POST[age]){
$age = $_POST[age];
}
else{
$errormsg = "Please enter yes or no";
}
if ($_POST[problems]){
$problems = $_POST[problems];
}
else{
$errormsg = "Please enter yes or no";
}
if ($_POST[shiftwork]){
$shiftwork = $_POST[shiftwork];
}
else{
$errormsg = "Please enter yes or no";
}
if ($_POST[apprenticeship]){
$apprenticeship = $_POST[apprenticeship];
}
else{
$errormsg = "Please enter yes or no";
}
if ($_POST[disabilities]){
$disabilities = $_POST[disabilities];
}
else{
$errormsg = "Please enter yes or no";
}
if ($_POST[ifyes]){
$ifyes = $_POST[ifyes];
}
else{
$errormsg = "if you answered no to above question, put N/A";
}
if ($_POST[accommodate]){
$accommodate = $_POST[accommodate];
}
else{
$errormsg = "if you answered N/A to above question, put N/A";
}
if ($_POST[experience]){
$experience = $_POST[experience];
}
else{
$errormsg = "Please enter yes or no";
}
if ($_POST[ifyes2]){
$ifyes2 = $_POST[ifyes2];
}
else{
$errormsg = "if you answered no to above question, put N/A";
}
if ($_POST[cname]){
$cname = $_POST[cname];
}
else{
$errormsg = "Please enter company name";
}
if ($_POST[caddress]){
$caddress = $_POST[caddress];
}
else{
$errormsg = "Please enter company address";
}
if ($_POST[cphone]){
$cphone = $_POST[cphone];
}
else{
$errormsg = "Please enter company phone number";
}
if ($_POST[ccperson]){
$ccperson = $_POST[ccperson];
}
else{
$errormsg = "Please enter contact person's name";
}
if ($_POST[ctype]){
$ctype = $_POST[ctype];
}
else{
$errormsg = "Please enter type of work";
}
if ($_POST[cwage]){
$cwage = $_POST[cwage];
}
else{
$errormsg = "Please enter wage earned";
}
if ($_POST[cstart]){
$cstart = $_POST[cstart];
}
else{
$errormsg = "Please enter date started";
}
if ($_POST[cend]){
$cend = $_POST[cend];
}
else{
$errormsg = "Please enter date ended";
}
if ($_POST[creason]){
$creason = $_POST[creason];
}
else{
$errormsg = "Please enter reason for leaving";
}
if ($_POST[cname2]){
$cname2 = $_POST[cname2];
}
else{
$errormsg = "Please enter company name, or type N/A";
}
if ($_POST[caddress2]){
$caddress2 = $_POST[caddress2];
}
else{
$errormsg = "Please enter company address, or type N/A";
}
if ($_POST[cphone2]){
$cphone2 = $_POST[cphone2];
}
else{
$errormsg = "Please enter company phone number, or type N/A";
}
if ($_POST[ccperson2]){
$ccperson2 = $_POST[ccperson2];
}
else{
$errormsg = "Please enter contact person's name, or type N/A";
}
if ($_POST[ctype2]){
$ctype2 = $_POST[ctype2];
}
else{
$errormsg = "Please enter type of work, or type N/A";
}
if ($_POST[cwage2]){
$cwage2 = $_POST[cwage2];
}
else{
$errormsg = "Please enter wage earned, or type N/A";
}
if ($_POST[cstart2]){
$cstart2 = $_POST[cstart2];
}
else{
$errormsg = "Please enter date started, or type N/A";
}
if ($_POST[cend2]){
$cend2 = $_POST[cend2];
}
else{
$errormsg = "Please enter date ended, or type N/A";
}
if ($_POST[creason2]){
$creason2 = $_POST[creason2];
}
else{
$errormsg = "Please enter reason for leaving, or type N/A";
}
if ($_POST[cname3]){
$cname3 = $_POST[cname3];
}
else{
$errormsg = "Please enter company name, or type N/A";
}
if ($_POST[caddress3]){
$caddress3 = $_POST[caddress3];
}
else{
$errormsg = "Please enter company address, or type N/A";
}
if ($_POST[cphone3]){
$cphone3 = $_POST[cphone3];
}
else{
$errormsg = "Please enter company phone number, or type N/A";
}
if ($_POST[ccperson3]){
$ccperson3 = $_POST[ccperson3];
}
else{
$errormsg = "Please enter contact person's name, or type N/A";
}
if ($_POST[ctype3]){
$ctype3 = $_POST[ctype3];
}
else{
$errormsg = "Please enter type of work, or type N/A";
}
if ($_POST[cwage3]){
$cwage3 = $_POST[cwage3];
}
else{
$errormsg = "Please enter wage earned, or type N/A";
}
if ($_POST[cstart3]){
$cstart3 = $_POST[cstart3];
}
else{
$errormsg = "Please enter date started, or type N/A";
}
if ($_POST[cend3]){
$cend3 = $_POST[cend3];
}
else{
$errormsg = "Please enter date ended, or type N/A";
}
if ($_POST[creason3]){
$creason3 = $_POST[creason3];
}
else{
$errormsg = "Please enter reason for leaving, or type N/A";
}
if ($_POST[maywe]){
$maywe = $_POST[maywe];
}
else{
$errormsg = "Type names of companies you do not want us to contact, or type, ok all";
}
if ($_POST[additional]){
$additional = $_POST[additional];
}
else{
$errormsg = "Type N/A if you do not have any additional information";
}
if ($_POST[electronicsignfn]){
$electronicsignfn = $_POST[electronicsignfn];
## Heading ##    }
else{
$errormsg = "Please enter your full name";
}
if ($_POST[electronicsignssn]){
$electronicsignssn = $_POST[electronicsignssn];
}
else{
$errormsg = "Please enter your Social Security Number";
}
if ($_POST[emailaddress]){
$emailaddress = $_POST[emailaddress];
}
else{
$errormsg = "Please enter your email address";
}
else{
if ($errormsg){ //if there is already an error, add next error
$errormsg = $errormsg;
}else{
}
}
}
?>

Answer 1

1. there is no if for following else

   else{ if ($errormsg){ //if there is already an error, add next error $errormsg = $errormsg; }else{

   }
   

   }

2. $errormsg = $errormsg; doesn't mean anything.

3. Errormsg is assigned but never used. Use echo $errormsg;
4. $_POST[first_name] should be $_POST['first_name']
5. Instead of $_POST['submitted'] use if($_POST['field89'] == 'Submit')
6. Why don't you experiment with a small form and expand when it starts working.