for example if i have the following array:
$numbers=array(
"A"=>$value1,
"B"=>$value2,
"C"=>$value3,
"D"=>$value4,
"E"=>$value5,
"F"=>$value6,
"G"=>$value7,
);
and if some of the value variables are equal to 0 and the rest are equal to 1, how can I select the keys which values are equal, for example to 0?
$result = [];
foreach($numbers as $id => $number) {
if($number ==0)
$result[$id] = $number;
}
Try this:
$all_zeros = array_filter($numbers);
$all_ones = array_diff($numbers, $all_zeros);
Also you might use a custom filter function like below:
function custom_filter($numbers, $targetValue) {
return array_filter($numbers, function ($i) use ($targetValue) {
return $targetValue == $i;
});
}
Ref: