CODEWITHSUNDEEP
php
Rahul Singh
Rahul Singh

Reputation: 1632

Illegal offset in array

I am trying to check array using another loop.

     for(   $i=0;$i<count($allCheckBoxId);$i++  )       {
        if( $allCheckBoxId[$i] != ''){
            unset( $contactlist[$cntctnum] );
            }
     }

I have named $allCheckBoxId, having contactnumber as value. Second array I have named $contactlist having contactnumber as key element.

For particular condition I am retrieving values of first array. Means I would have contactnumber as value retrieve in first array. IF it is not null I am unsetting second element with value contactnumber. but its giving me error on unset( $contactlist[$cntctnum] ); as Illegal offset type in unset in

Upvotes: 0

Views: 13647

Answers (2)

Danny Bullis
Danny Bullis

Reputation: 3199

Try casting your key into a string. Replace:

$contactlist[$cntctnum]

With

$contactlist[(string) $cntctnum]

OR

for($i = 0; $i < count($allCheckBoxId); $i++)       {
    if($allCheckBoxId[$i] != '') {
        $key = (string) $cntctnum;
        unset( $contactlist[$key] );        
    }
}

PHP associative arrays, as of PHP 5.4 will issue a PHP Warning: Illegal Offset Type if you use something other than a string as a key.

Furthermore, if this doesn't help, head over to the PHP Array Manual and do a Ctrl/Cmd + F for "Illegal Offset Type."

Upvotes: 5

Your Common Sense
Your Common Sense

Reputation: 157839

Here comes interesting part.
You know, programming is not just writing the code.
Most of time programming is looking for errors. Not by asking questions on stackoverflow, but by amending your code and studying it's output and error messages. Some sort of investigation.

If you have got such an error message, doesn't that mean that somewhing wrong with offset type? Why not to print the problem variable out? just print it out: 

 for(   $i=0;$i<count($allCheckBoxId);$i++  )       {
    var_dump($cntctnum);
    var_dump($allCheckBoxId[$i]);
    var_dump($contactlist[$cntctnum]);
    if( $allCheckBoxId[$i] != ''){
        unset( $contactlist[$cntctnum] );
    }
 }

and see what's particularly wrong with your offset

Upvotes: 6

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