wenn .. elseif Anweisung funktioniert nur auf elseif

Question

Ich habe das unten PHP-Skript funktioniert, wenn Sie eine Bedingung verwenden (if..else funktioniert gut) Wenn versuchen, wenn und wenn if-Anweisung (wegen zwei Bedingungen sind wahr) die der zweite arbeitet und nicht der erste.

Script:

$damage_topdir = "/ids_images/drsIN2/"; 
$damage_topdir1 = "/ids_images/drsIN1/"; 

$tmp = split(" ", $displayEntryDatetime); 
$date = $tmp[0]; 
$time = $tmp[1]; 

$tmp = split("/", $date); 
$day = $tmp[0]; 
$month = $tmp[1]; 
$year = $tmp[2]; 

$displayEntryDatetime = $year."-".$month."-".$day." ".$time; 

$cam_list = array(1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16); 

if ($cam = 'DRHdrsIN1') 
{ 
foreach ($cam_list as $cam) { 
    $timestamp = strtotime($displayEntryDatetime); 
    $cam_delta =6; 
    $timestamp = $timestamp - $cam_delta; 
    for ($i = 0; $i < $cam_delta+20; $i++) { 
    $cdate = date("d_m_Y* H_i_s", $timestamp); 
    $image_name = "/xampp/htdocs" . $damage_topdir. $cam . "/Cam*" . $cam . "*-" .$cdate . "*"; 

    foreach (glob($image_name) as $filename) { 
     if (file_exists($filename)) { 
     $fs_image = str_replace("/xampp/htdocs", "", $filename); 
     print "<h3>Camera $cam</h3>";   
     print "<a href=\"$fs_image\" target=\"_new\"><img src=\"$fs_image\" height=240 width=320 /></a>\n"; 
     } 
    } 
    $timestamp++; 
    } 
} 
} 

elseif($cam = 'DRHdrsIN2') ----> this one executes normally... 
{ 
    foreach ($cam_list as $cam) { 
    $timestamp = strtotime($displayEntryDatetime); 
    $cam_delta = 6; 
    $timestamp = $timestamp - $cam_delta; 

    for ($i = 0; $i < $cam_delta+20; $i++) { 
    $cdate = date("d_m_Y* H_i_s", $timestamp); 
    $image_name = "/xampp/htdocs" . $damage_topdir1. $cam . "/Cam*" . $cam . "*-" .$cdate . "*"; 

    foreach (glob($image_name) as $filename) { 
     if (file_exists($filename)) { 
     $fs_image = str_replace("/xampp/htdocs", "", $filename); 

     print "<h3>Camera $cam</h3>";   
     print "<a href=\"$fs_image\" target=\"_new\"><img src=\"$fs_image\" height=240 width=320 /></a>\n"; 
     } 
    } 
    $timestamp++; 
    } 
} 
} 
else { 

} 
?> 

Answer 1

Sie definiert einen Vergleich zu verwenden, nicht einen Auftrag:

if ($cam == 'DRHdrsIN1'){ 
    .... 
elseif($cam == 'DRHdrsIN2'){ 
    ...