$iterator = new ArrayIterator([1, 2]); array_walk($iterator, function($item) {echo $item . PHP_EOL;}); This piece of php code outputs the items (1 and 2) in php 7.3 but it outputs nothing in php 7...

If I use array_walk inside a class function to call another function of the same class class user { public function getUserFields($userIdsArray,$fieldsArray) { if((isNonEmptyArray($userIdsArra...

I have the problem that I get the error PHP Fatal error: Call-time pass-by-reference has been removed in.... I discovered some similar questions e.g. PHP 5.4 Call-time pass-by-reference - Ea...

I have a variable $id = 10, it's need to use inside of array_walk(). Like bellow : $id = 10; array_walk($profile_items, function(&$a) { $count = $this->db->where('profile_item_id', $a['...

I have looked through a few answers on here but that don't seem to utilise this method? I have an array of items, and the items are objects. The object can have a key which is 'children' and 'chil...

Why does my sample code result in the first string still having a trailing space? $a=array('test_data_1 ','test_data_2'); array_walk($a, 'trim'); array_map('trim', $a); foreach($a AS $b){ var_du...