two array difference in php code example
Example 1: php find differences between two arrays
<?php
$array1 = array("a" => "green", "red", "blue", "red");
$array2 = array("b" => "green", "yellow", "red");
$result = array_diff($array1, $array2);
print_r($result);
?>
Array
(
[1] => blue
)
Example 2: multidimensional array difference in php
function array_diff_assoc_recursive($array1, $array2) {
$difference=array();
foreach($array1 as $key => $value) {
if( is_array($value) ) {
if( !isset($array2[$key]) || !is_array($array2[$key]) ) {
$difference[$key] = $value;
} else {
$new_diff = array_diff_assoc_recursive($value, $array2[$key]);
if( !empty($new_diff) )
$difference[$key] = $new_diff;
}
} else if( !array_key_exists($key,$array2) || $array2[$key] !== $value ) {
$difference[$key] = $value;
}
}
return $difference;
}
$changes = array();
if ($result= array_diff_assoc_recursive($new_value,$old_value)) {
$new = array();
foreach ($result as $key => $value) {
$new[$key] = $value;
}
$new['ID'] = $new_value['ID'];
$changes[] = $new ;
}
print_r($changes);