如果它没有出现在另一个数组中，我想要我的数组中的值

Question

How can i get the desired output? I want to check if array1 "entry_id" is not the same as array2 "entry_id"

How can i do that? I tried with array_diff_key .. But it did not work

Array1

Array ( [0] => Array ( [entry_id] => 53242 [site_id] => 2 [channel_id] => 2 [author_id] => 5 [1] => Array ( [entry_id] => 76435 [site_id] => 8 [channel_id] => 8 [author_id] => 9  

Array2

Array ( [0] => Array ( [entry_id] => 89764 [site_id] => 1 [channel_id] => 1 [author_id] => 5  [1] => Array ( [entry_id] => 53242[site_id] => 7 [channel_id] => 9 [author_id] => 1  

I would like to compare array1 and array2 with each other and get the desired output:

Desired output:

   Array ( [0] => Array ( [entry_id] => 76434 [site_id] => 8 [channel_id] => 8 [author_id] => 9 [1] => Array ( [entry_id] => 76435 [site_id] => 8 [channel_id] => 8 [author_id] => 9 

Answer 1

For smallish size of input arrays you can basically do it the long way using two for loops.

Sample code (not tested!):

// $array1 and $array2 are the inputs
// $array3 is output
$array3=array();
// Keep track of what we have already found
$buff=array();
foreach($array1 as $a1){
    foreach($array2 as $a2){
        // Check for matching ids and is not already used
        if($a1['entry_id']==$a2['entry_id'] and !isset($buff[$a1['entry_id']])){
            $array3[]=$a1;
            $buff[$a1['entry_id']]=1;
        }
    }
}

print_r($array3); // Debug

EDIT: OP wanted the opposite, so...

Sample code (tested!):

// 2 pass filter
// $array1 and $array2 are the inputs
$array1=array(
    array('entry_id'=>1,'t'=>"a1"),
    array('entry_id'=>2,'t'=>"b1"),
    array('entry_id'=>3,'t'=>"c1"),
);
$array2=array(
    array('entry_id'=>1,'t'=>"a2"),
    array('entry_id'=>2,'t'=>"b2"),
    array('entry_id'=>4,'t'=>"d2"),
);

// $array3 is output
$array3=array();
// Keep track of what we have already found
$buff=array();

foreach($array1 as $a1) $buff[$a1['entry_id']]=array(1,$a1);

foreach($array2 as $a2){
    if(isset($buff[$a2['entry_id']])){
            $buff[$a2['entry_id']]=array(2,$a2);
    }else{
            $buff[$a2['entry_id']]=array(1,$a2);
    }
}

foreach($buff as $k=>$v) if($v[0]==1) $array3[]=$v[1];

print_r($array3); // Debug