我有以下数组。它包含昵称和名称:
$nickAndNames = array(
array( "Johnie", "John Larson" ),
array ("Maggie", "Margaret London" ),
array("Nic","Nicholas Carradine")
);
你能帮我打印第一个元素吗?我的意思是约翰尼、玛吉、尼克。
我有以下数组。它包含昵称和名称:
$nickAndNames = array(
array( "Johnie", "John Larson" ),
array ("Maggie", "Margaret London" ),
array("Nic","Nicholas Carradine")
);
你能帮我打印第一个元素吗?我的意思是约翰尼、玛吉、尼克。
数组的每个元素都是另一个数组。这个内部数组的每个元素依次包含 2 个元素:元素 0(一个字符串,昵称)和元素 1(另一个字符串,名字)。因此,您首先需要遍历$nicksAndNames
数组,然后显示内部数组的第一个元素(即元素 0):
// loop through $nickAndNames and assign, in turn, each inner array
// to a variable named $nickAndName
foreach ($nickAndNames as $nickAndName) {
// this $nickAndName variable now contains the inner array, something like:
// array("Johnie", "John Larson"), so "Johnie" is the first element,
// element 0
echo $nickAndName[0];
}
您想使用foreach循环遍历数组,然后打印第一个元素 index 0
。
$nickAndNames = array(
array( "Johnie", "John Larson" ),
array ("Maggie", "Margaret London" ),
array("Nic","Nicholas Carradine")
);
foreach ($nickAndNames as $name) {
echo $name[0];
}
这将遍历所有名称:
foreach( $nickAndNames as $data)
echo $data[0];
看这里:
foreach ($nickAndNames as $key => $value) {
var_dump($value[0]);
}
这应该给你一些工作:
foreach ($nickAndNames as $person)
{
reset($person); // May not be needed.
print current($person);
}
如果您可以使用正确命名的键值对来更正您的数组,如下所示,
$nickAndNames = array(
array( "nickname" => "Johnie", "name" => "John Larson" ),
array ("nickname" => "Maggie", "name" => "Margaret London" ),
array("nickname" => "Nic","name" => "Nicholas Carradine")
);
你可以做
foreach($nickAndNames as $nickAndName){
if(is_array($nickAndName))
{
foreach($nickAndName as $nN)
{
echo 'nickname = '. $nN['nickname'];
echo 'name = '. $nN['name'];
}
}
else
{
echo 'nickname = '. $nN['nickname'];
echo 'name = '. $nN['name'];
}
}
希望这可以帮助,
卡尔提克