php - 在 PHP 中获取变量名

Question

在下面的代码中，如何检查是否$variable等于“$one”。

<?php  
    $one = array (1,2,3);
    $two = array (4,5,6);

    $variables = array ($one, $two);

    foreach ($variables as $variable){
        //check if the $variable is equal to "$one"
            //do stuff that is specific for array $one
    }   
?>

Answer 1

欲了解更多信息，请访问此

<?php  
    $one = array (1,2,3);
    $two = array (4,5,6);

    $variables = array ($one, $two);

    foreach ($variables as $variable){
        //check if the $variable is equal to "$one"
           if($variable === $one)
            //do stuff
    }   
?>

Answer 2

简单地说，你不能。不过，您可以为这些值添加一个键：

<?php  
$one = array (1,2,3);
$two = array (4,5,6);

$variables = array ( 'one' => $one, 'two' => $two);

foreach ($variables as $key => $variable){
    //check if the $variable is equal to "$one"
    if( $key === 'one' ) {
        //do stuff that is specific for array $one
    }
}   

Answer 3

  foreach ($variables as $variable){
        if($variable == $one)//TRUE if $a and $b have the same key/value pairs.
        {

        }
    } 

如果您还想检查订单和类型，您可以执行以下操作：

  foreach ($variables as $variable){
        if($variable === $one)
        {

        }
    } 

Answer 4

你可以检查

if($variable===$one)

您正在使用多维数组。请记住，您需要检查“===”，而不是“==”，因为它不是变量，甚至不是字符串。