Question

我只想输出每个数组的名字。我在下面的代码中的注释解释。我不想要钥匙，只是价值。正如您将从下面描述的内容中看到的，我希望有一个能产生预期效果的循环。是否存在仅返回'firstName'值的循环？感谢....

<?php
$contacts = array(
    array(
        'firstName' => "Hoth",
        'lastName' => "Omiaenoed",
        'address'=> "76 S. Mammoth St.",
        'city' => "Westfield",
        'state' => "MA",
        'zip' => "01085",
    ),
    array(
        'firstName' => "Akae",
        'lastName' => "Uniaebul",
        'address'=> "8038 Shadow Brook Street",
        'city' => "Ocoee",
        'state' => "FL",
        'zip' => "34761",
    ),
    array(
        'firstName' => "Upae",
        'lastName' => "Aesuudoes",
        'address'=> "7044 N. School St.",
        'city' => "Riverdale",
        'state' => "GA",
        'zip' => "30274",
    ),
    array(
        'firstName' => "Doer",
        'lastName' => "Waezoeyo",
        'address'=> "338 Old Griffin St.",
        'city' => "Antioch",
        'state' => "TN",
        'zip' => "37013",
    ),
    array(
        'firstName' => "Ozae",
        'lastName' => "Iraeoewif",
        'address'=> "65 West Chapel Dr.",
        'city' => "San Angelo",
        'state' => "TX",
        'zip' => "76901",
    ),
    array(
        'firstName' => "Naes",
        'lastName' => "Ebaeaeraesh",
        'address'=> "34 Tower Street",
        'city' => "Huntersville",
        'state' => "NC",
        'zip' => "28078",
    )
);

/* I want to echo (print) just the first names from each array. I hoped I could use a "foreach" loop to do this and it seemed to me the one just below should work */

foreach ($contacts['firstName'] as $fname) {
    while (list( , $firstn) = each($fname)) {
        echo "$firstn <br/>";
    }
    echo "------------------------------------------<br/>";
}

/* But it does not. Adding in ['firstName'] does not work. So, I have to use this one below, for lack of knowing what else to do. */

echo $contacts[0]['firstName']; echo "<br/>";
echo "------------------------------------------<br/>";
echo $contacts[1]['firstName']; echo "<br/>";
echo "------------------------------------------<br/>";
echo $contacts[2]['firstName']; echo "<br/>";
echo "------------------------------------------<br/>";
echo $contacts[3]['firstName']; echo "<br/>";
echo "------------------------------------------<br/>";
echo $contacts[4]['firstName']; echo "<br/>";
echo "------------------------------------------<br/>";
echo $contacts[5]['firstName']; echo "<br/>";
echo "------------------------------------------<br/>";

/* I used this to output each complete array and it works just fine. */

foreach ($contacts as $info) {
    while (list( , $lines) = each ($info)) {
        echo "$lines <br/>";
    }
    echo "<hr/>";
}    

?>

Answer 1

  <?php   foreach ($contacts as $firtname) {
     echo $firtname['firstName'] ;   
    }
?>

我认为这就是你要找的......

Answer 2

如果使用php 5.5 +

，您可以使用array columns

$list_fn = array_column($contacts, 'firstName');

Answer 3

你可以做什么。

$first_names = array_column($contacts, 'firstName'); // This returns what you need
foreach( $first_names as $name ){
    echo $name . "<br/>";
    echo "------------------------------------------<br/>";
}

希望这有助于你！

Answer 4

foreach($contacts as $contact){
    echo $contact['firstName']."</br>";
}

PHP，从多维数组

5 个答案: