Question

我有这个对象：

$boosts = array(
    "2x12" => 500,
    "2x24" => 800,
    "2x7d" => 4500,
    "3x12" => 700,
    "3x24" => 1300,
    "3x7d" => 6500
);

然后变量：$type = "2x12"; 我想要做的是检查一个循环，如果变量$ type存在于$ boosts中。我尝试了很多代码，但我无法得到它。

foreach ($boosts as $savedTypes) {
    echo json_encode($savedTypes) . "|";
    if ($boosts[$type] === $type) {
        echo "VALID";
    }
}

Answer 1

除非我错过了某些内容，否则您应该能够在此例中使用array_key_exists

$boosts = array(
    "2x12" => 500,
    "2x24" => 800,
    "2x7d" => 4500,
    "3x12" => 700,
    "3x24" => 1300,
    "3x7d" => 6500
);
$type='2x12';
$valid=array_key_exists( $type, $boosts );
echo $valid ? 'VALID' : 'INVALID';

Answer 2

foreach ($boosts as $key=>$value) {  
   if ($key === $type) {
    echo "VALID";
   }
 }

希望这会对你有所帮助

PHP - 对象循环条件

2 个答案: