PHP按值删除关联数组中的元素

Question

  

可能重复：
  Remove integers in array less than X with PHP

$array = array( 
    "a" => 10, 
    "b" => 9, 
    "c" => 8, 
    "d" => 7,
    "e" => 6,
    "f" => 5,
    "g" => 4,
    "h" => 3 
    );

如果值小于6，我如何删除项目？即，我怎样才能获得以下数组？

$array = array( 
    "a" => 10, 
    "b" => 9, 
    "c" => 8, 
    "d" => 7,
    "e" => 6
    );

Answer 1

array_filter非常适合：

$new = array_filter($old,function($a) {return $a >= 6;});

Answer 2

一个简单的迭代就是：

$new_array = array();
foreach($arras as $key => $value){
  if($value >= 6)new_array[$key] = $value;
}

Answer 3

foreach($array as $index=>$value) {
  if ( $value < 6) {
    unset($array[$index]);
  }
}

或

foreach($array as $index=>$arr_value) {
  if ( $value >= 6) {
    $new_array[$index] = $arr_value;
  }
}