Avoid breaking hostapd config file with tabs

includes/functions.php

@@ -995,20 +995,13 @@ function SaveHostAPDConfig(){
 		auth_algs=1
 		wpa_key_mgmt=WPA-PSK';
 
-		$config .= "interface=".$_POST['interface']."
-		";
-		$config .= "ssid=".$_POST['ssid']."
-		";
-		$config .= "hw_mode=".$_POST['hw_mode']."
-		";
-		$config .= "channel=".$_POST['channel']."
-		";
-		$config .= "wpa=".$_POST['wpa']."
-		";
-		$config .='wpa_passphrase='.$_POST['wpa_passphrase'].'
-		';
-		$config .="wpa_pairwise=".$_POST['wpa_pairwise']."
-		";
+		$config .= "interface=".$_POST['interface'].PHP_EOL;
+		$config .= "ssid=".$_POST['ssid'].PHP_EOL;
+		$config .= "hw_mode=".$_POST['hw_mode'].PHP_EOL;
+		$config .= "channel=".$_POST['channel'].PHP_EOL;
+		$config .= "wpa=".$_POST['wpa'].PHP_EOL;
+		$config .='wpa_passphrase='.$_POST['wpa_passphrase'].PHP_EOL;
+		$config .="wpa_pairwise=".$_POST['wpa_pairwise'].PHP_EOL;
 		$config .="country_code=".$_POST['country_code'];
 
 		exec( "echo '$config' > /tmp/hostapddata", $return );