Uploaden als bestand niet bestaat (Opgelost)

<?php
	if( isset($_POST['f_sub'])) {
		if( $_SESSION['security_code'] == $_POST['security_code'] && !empty($_SESSION['security_code'] ) ) {
			$target_path = "tmp/";

			$target_path = $target_path . basename($_FILES['uploadedfile']['name']); 

			if(move_uploaded_file($_FILES['uploadedfile']['tmp_name'], $target_path)) {
				echo "<font color='green'>Het bestand '".  basename( $_FILES['uploadedfile']['name']). 
				"' is succesvol geüpload.</font>";
			} else {
				echo "<font color='red'>Het uploaden is niet gelukt. Probeer het opnieuw!</font>";
			}
		} else {
			echo "<font color='red'>De ingevoerde Captcha is incorrect. Probeer het opnieuw!</font>";
		}
	}
?>
<form enctype="multipart/form-data" action="f_upload.php" method="POST">
	<input type="hidden" name="MAX_FILE_SIZE" value="250000" />
	<b>Kies een bestand om te uploaden</b><br />
	<input name="uploadedfile" type="file" size="15" /> <input type="submit" name="f_sub" value="Upload bestand" /><br /><br />
	<img src="captcha.php" width="120px" height="40px" /><br /><input id="security_code" name="security_code" type="text" size="15" maxlength="10" /><br /><br />
</form>

<?php
	if( isset($_POST['f_sub'])) {
		if( $_SESSION['security_code'] == $_POST['security_code'] && !empty($_SESSION['security_code'] ) ) {
			$target_path = "tmp/";
 
			$target_path = $target_path . basename($_FILES['uploadedfile']['name']); 
 
			if(move_uploaded_file($_FILES['uploadedfile']['tmp_name'], $target_path)) {
				echo "<font color='green'>Het bestand '".  basename( $_FILES['uploadedfile']['name']). 
				"' is succesvol geüpload.</font>";
			} else {
				echo "<font color='red'>Het uploaden is niet gelukt. Probeer het opnieuw!</font>";
			}
		} else {
			echo "<font color='red'>De ingevoerde Captcha is incorrect. Probeer het opnieuw!</font>";
		}
	}
?>
<form enctype="multipart/form-data" action="f_upload.php" method="POST">
	<input type="hidden" name="MAX_FILE_SIZE" value="250000" />
	<b>Kies een bestand om te uploaden</b><br />
	<input name="uploadedfile" type="file" size="15" /> <input type="submit" name="f_sub" value="Upload bestand" /><br /><br />
	<img src="captcha.php" width="120px" height="40px" /><br /><input id="security_code" name="security_code" type="text" size="15" maxlength="10" /><br /><br />
</form>

// ...deze code werkt niet.
$filename = '/pathto/file.php'; 

if (file_exists($filename)) { 
 echo "The file $filename exists"; 
} else { 
 echo "The file $filename does not exist"; 
} 

// ...deze code werkt niet.
$filename = '/pathto/file.php'; 
 
if (file_exists($filename)) { 
 echo "The file $filename exists"; 
} else { 
 echo "The file $filename does not exist"; 
}