execute php

[bluewalrus]

I found this code on a site a while back. It's similar to what i want but not quite also i dont know if its possible. I have a php page but i want an if statment once the submit is clicked i want it to run the php but if the submit is not clicked i don't want it to run. This isn't php forwarding to another php to verify.
This is the code that is similiar:

  <script type="text/javascript" language="javascript">
     function verifyMe(element)
	   {
	      if(document.getElementsByTagName("input")[0].value!=""){
		     element.action ="http://www.google.com/search";
			 element.submit();
		   }
		  else alert("Please enter a quary"); 	 
	   }
  </script>

I tried this at the start of my php but then realized it wasn't waiting for the submit to be hit it was just saying enter required fields and wouldn't go any further. I'm not sure how that java works above but would appreciate and help you can offer.

if (empty($denim) || empty($age) || empty($lifestyle)) {
die ('Please Enter all required fields.');} 

Also if i think its similiar to that code above with the else sending the enter required fields can i put php withing java script?

Thanks

[rangana]

<?php
if(isset($_METHOD['name_of_the_submit_button'])) // Change method with either post/get. Should match on form's action.
    {
    if (empty($denim) || empty($age) || empty($lifestyle))
        die ('Please Enter all required fields.');  
    }
else
    {
?>
Your Form Here
<?php
    }
?>

[bluewalrus]

That's not working it's still going through the else. Dont know if i put it in wrong? Here's how I added it with all of the html as well.

<?php
$name =  $_POST['name'];
$denim =  $_POST['denim'];
$age =  $_POST['age'];
$lifestyle = $_POST['lifestyle'];
//check if required fields have data
if (isset($_POST['newad'])) {
   if (empty($denim) || empty($age) || empty($lifestyle))
       die ('Please Enter all required fields.<form name="newad" method="post" enctype="multipart/form-data"  action="">
Name:<br /><input name="name" type="text" />
<br />Age:*<br /><input name="age" type="text" />
<br />Denim*:<br /><input name="denim" type="text" />
<br />Lifestyle:*<br /><input name="lifestyle" type="text" /><br />
<input type="file" name="image[]" /><br />
<input type="file" name="image[]" /><br />
<input type="file" name="image[]" /><br />
<input name="Submit" type="submit" value="Upload images" />
  </form>
</body>
</html>
');
    }
else
    {
//run a loop until all files are uploaded
for($m = 0; $m < count($_FILES['image']); $m++) {
$image = $_FILES['image'][$m];
//increase the number of files uploaded
$counterfile = "number.txt";
$fp = fopen($counterfile,"r");
$hits = fgets($fp,100);
fclose($fp);
$hits++;
$myFile = "uploads.txt";
$fh = fopen($myFile, 'a+');
$data = "ID=\n" . $hits . '\n' . $name . '\n' . $denim . '\n' . $age . '\n' . $lifestyle;
fwrite($fh, $data);
fclose($fh);
$fp = fopen($counterfile,"w");
fputs($fp, $hits);
fclose($fp);
//START IMAGE UPLOAD SCRIPT
//define a maxim size for the uploaded images in Kb
 define ("MAX_SIZE","9000000"); 
//This function reads the extension of the file. It is used to determine if the file  is an image by checking the extension.
 function getExtension($str) {
         $i = strrpos($str,".");
         if (!$i) { return ""; }
         $l = strlen($str) - $i;
         $ext = substr($str,$i+1,$l);
         return $ext;
 }
//This variable is used as a flag. The value is initialized with 0 (meaning no error  found)  
//and it will be changed to 1 if an errro occures.  
//If the error occures the file will not be uploaded.
 $errors=0;
//checks if the form has been submitted
 if(isset($_POST['Submit'])) 
 {
     //reads the name of the file the user submitted for uploading
     $image=$_FILES['image']['name'];
     //if it is not empty
     if ($image) 
     {
     //get the original name of the file from the clients machine
         $filename = stripslashes($_FILES['image']['name']);
     //get the extension of the file in a lower case format
          $extension = getExtension($filename);
         $extension = strtolower($extension);
     //if it is not a known extension, we will suppose it is an error and will not  upload the file,  
    //otherwise we will do more tests
 if (($extension != "jpg") && ($extension != "jpeg") && ($extension != "png") && ($extension != "gif")) 
         {
        //print error message
             echo '<h1>Unknown extension!</h1>';
             $errors=1;
         }
         else
         {
//get the size of the image in bytes
 //$_FILES['image']['tmp_name'] is the temporary filename of the file
 //in which the uploaded file was stored on the server
 $size=filesize($_FILES['image']['tmp_name']);

//compare the size with the maxim size we defined and print error if bigger
if ($size > MAX_SIZE*1024)
{
    echo '<h1>You have exceeded the size limit!</h1>';
    $errors=1;
}

//we will give an unique name, for example the time in unix time format
$image_name=$image;
//the new name will be containing the full path where will be stored (images folder)
$newname="/".$image_name . $hits;
//we verify if the image has been uploaded, and print error instead
$copied = copy($_FILES['image']['tmp_name'], $newname);
if (!$copied) 
{
    echo '<h1>Copy unsuccessfull!</h1>';
    $errors=1;
}}}}

//If no errors registred, print the success message
 if(isset($_POST['Submit']) && !$errors) 
 {
     echo "<h1>File Uploaded Successfully! Upload Another?</h1>";
 }
 }
 }
 ?>
<form name="newad" method="post" enctype="multipart/form-data"  action="">
Name:<br /><input name="name" type="text" />
<br />Age:*<br /><input name="age" type="text" />
<br />Denim*:<br /><input name="denim" type="text" />
<br />Lifestyle:*<br /><input name="lifestyle" type="text" /><br />
<input type="file" name="image[]" /><br />
<input type="file" name="image[]" /><br />
<input type="file" name="image[]" /><br />
<input name="Submit" type="submit" value="Upload images" />
  </form>

[bluewalrus]

ok i found another way to do it this is all set now thanks