unset from array using array_search

[amirelgohary1990]

 

Hello, I am trying to unset from array using array_search, 
it's working, except the first array value "a+" is not working

$bloodType_list = ['a+','a-','b+','b-','o+','o-','ab+','ab-']; 
   if($key = array_search('a+',$bloodType_list)){
      unset($bloodType_list[$key]);
   }
    foreach($bloodType_list as $bloodType_lists){
        echo $bloodType_lists."<br>";
    }

 

[mac_gyver]

the key/index for the 'a+' entry is 0. this is a boolean false value, so the if() logic branch is skipped. you need to perform an exact match for a non-false value. e.g. !== false

[amirelgohary1990]

2 hours ago, mac_gyver said:

the key/index for the 'a+' entry is 0. this is a boolean false value, so the if() logic branch is skipped. you need to perform an exact match for a non-false value. e.g. !== false

You mean like below code ?

$bloodType_list = ['a+','a-','b+','b-','o+','o-','ab+','ab-'];
if($key = array_search('a+',$bloodType_list)) !== false {       
unset($bloodType_list[$key]);
}     
foreach($bloodType_list as $bloodType_lists){         
    echo $bloodType_lists."<br>";
}

I tried that not working too

[Barand]

Your "( .. )" are in the wrong places.

[maxxd]

Don't try to assign and compare on the same line; it makes things complicated. Assign the array_search result to $key on it's own line, absolutely compare $key to false. If $key is not false, unset the value at index $key.

[amirelgohary1990]

6 hours ago, maxxd said:

Don't try to assign and compare on the same line; it makes things complicated. Assign the array_search result to $key on it's own line, absolutely compare $key to false. If $key is not false, unset the value at index $key.

I tried this also, but same problem

 

$bloodType_list = ['a+','a-','b+','b-','o+','o-','ab+','ab-']; 
   if($key = array_search('a+',$bloodType_list)){
   if($key !== false){
      unset($bloodType_list[$key]);
   }
   }
    foreach($bloodType_list as $bloodType_lists){
        echo $bloodType_lists."<br>";
    }

 

[amirelgohary1990]

10 hours ago, Barand said:

Your "( .. )" are in the wrong places.

It was inside the () just I wrote here by wrong

[maxxd]

You're still setting the $key variable inside a conditional.

$key = array_search('a+', $bloodType_list);

Don't wrap it in a conditional, just make the assignment a statement. Then check the value of the variable against false (which you are currently doing).