检查foreach中的每个if语句

问题描述：

Why my if-statement not checking each array inside foreach ? If someone already choose same kind of value, I want to disable it from select2 value, here's my code looks like :

function get_status_cab()
    {
        $status=$_POST['search'];
        echo '<label for="username" class="col-sm-3 control-label">Status</label>';
        echo '<div class="col-sm-9">';
        echo '<select class="form-control select2" name="status">';
            $cek=$this->db_umum->select("SELECT id,status FROM lembaga where id='$status'");
            foreach($cek as $cek){
                $statusnya = $cek->status;
            }
            $hasil=array(
                "pusat" => "Pusat",
                "cabang" => "Cabang",   
                "unit" => "Unit",
                "proyek" => "Proyek",
                "subproyek" => "Subproyek"
            );
        foreach($hasil as $value => $label)
        {
            $no=0;
            if($value = $statusnya){
                $disable[] = "disabled='disabled'";
            }else{
                $disable[] = "";
            }
            echo "<option value='".$value."' $disable[$no]>".$label."</option>";
            $no++;
        }
        echo '</select></div><br/>'; 
    }

The result is if $value = $statusnya , my whole select2 will disabled. But, It is not what I want. I want only value which is exact with $statusnya is disabled and the other is available. Any advice ?

为什么我的if语句没有检查foreach中的每个数组？如果某人已经选择了相同类型的值，我想从select2值中禁用它，这里的代码如下所示： p>

  function get_status_cab（）
 {
 $ status =  $ _POST ['search']; 
 echo'＆lt; label for =“username”class =“col-sm-3 control-label”＆gt; Status＆lt; / label＆gt;'; 
 echo'＆lt; div class =  “col-sm-9”＆gt;'; 
 echo'＆lt; select class =“form-control select2”name =“status”＆gt;'; 
 $ cek = $ this-＆gt; db_umum-＆gt; select  （“SELECT id，status FROM lembaga，其中id ='$ status'”）; 
 foreach（$ cek as $ cek）{
 $ statusnya = $ cek-＆gt; status; 
} 
 $ hasil = array  （
“pusat”=＆gt;“Pusat”，
“cabang”=＆gt;“Cabang”，
“unit”=＆gt;“单位”，
“proyek”=＆gt;“Proyek”，\  n“subproyek”=＆gt;“Subproyek”
）; 
 foreach（$ hasil as $ value =＆gt; $ label）
 {
 $ no = 0; 
 if（$ value = $ statusnya）{  
  $ disable [] =“disabled ='disabled'”; 
} else {
 $ disable [] =“”; 
} 
 echo“＆lt; option value ='”。$ value。“'$ disable  [$ no]＆gt;“。$ label。”＆lt; / option＆gt;“; 
 $ no ++; 
} 
 echo'＆lt; / select＆gt;＆lt; / div＆gt;＆lt; br /＆gt;';  
} 
  code>  pre> 
 
 结果是如果$ value = $ statusnya，我的整个select2将被禁用。 但是，这不是我想要的。
我只想要与$ statusnya完全相同的值被禁用而另一个可用。
任何建议？ p> 
  div>

答

You are using single equal(=) thats not correct you should use == for compare.

Replace this line

if($value = $statusnya){

with

 if($value == $statusnya){

also define $no outside of foreach

Example:-

$no=0;
foreach($hasil as $value => $label)
{                
    if($value == $statusnya){
        $disable[] = "disabled='disabled'";
    }else{
        $disable[] = "";
    }
    echo "<option value='".$value."' $disable[$no]>".$label."</option>";
    $no++;
}

答

$disable = arrary();
foreach($hasil as $value => $label)
        {
            $no=0;
            if($value = $statusnya){
                $disable[$no] = "disabled='disabled'";
            }else{
                $disable[] = "";
            }
            echo "<option value='".$value."' $disable[$no]>".$label."</option>";
            $no++;
        }

答

$disable = array();
foreach($hasil as $value => $label)
{
    $no=0;
    if($value == $statusnya){
        $disable[$no] = "disabled='disabled'";
    }else{
        $disable[] = "";
    }
    echo "<option value='".$value."' $disable[$no]>".$label."</option>";
    $no++;
}

答

I know you already accepted an answer, and that this isn't codereview.stackexchange.com but I hope you will consider the information below.

Use the equality operator (I.e. ==) instead of the assignment operator (I.e. =) to check if $value is equal to $statusnya. Also you don't need to use an array to store the disabled attribute (unless you need to retain information about each option being disabled later).

foreach($hasil as $value => $label)
{       
      $disabled = ''; // empty string -> not disabled         
     if($value == $statusnya){
           $disabled = "disabled='disabled'";
     }
     echo "<option value='".$value."' $disabled>".$label."</option>";
 }

The array storage requires more memory on the server compared to the string so as your page/application grows it would require more resources. Take a look at this phpfiddle and see How big are arrays?.

检查foreach中的每个if语句

相关推荐