[英]how to unset array key and value?
Array
(
[0] => Array
(
[accountNo] => 208773
)
)
Array
(
[0] => Array
(
[accountNo] => 9415238
)
)
Array
(
)
how can i unset the last array so that it must display only first 2 array. 如何取消设置最后一个数组,使其必须只显示前2个数组。
please help 请帮忙
thanks 谢谢
If these 3 arrays are the content of one array, let's call it $array
: 如果这3个数组是一个数组的内容,那么我们称之为$array
:
array_pop($array);
Will remove the last one, and optionally return it's value. 将删除最后一个,并可选择返回它的值。
array_pop — Pop the element off the end of array array_pop - 从数组末尾弹出元素
http://php.net/manual/function.array-pop.php http://php.net/manual/function.array-pop.php
This does the same thing as unset()
here, but for curiosity's sake, here's another way: 这与unset()
的功能相同,但为了好奇,这是另一种方式:
// Move the pointer to the last element
end($array);
// Get the key of the element
$key = key($array);
// Unset the item
unset($array[$key]);
Just use array_pop()
though, the other method was for entertainment purposes only, but you could use it if you want to change the last element's value. 只是使用array_pop()
,另一种方法仅用于娱乐目的,但如果你想改变最后一个元素的值,你可以使用它。
Demo: http://codepad.org/UFjal89X 演示: http : //codepad.org/UFjal89X
Some reference: 一些参考:
key()
: http://php.net/manual/function.key.php key()
: http : //php.net/manual/function.key.php
end()
: http://php.net/manual/function.end.php end()
: http : //php.net/manual/function.end.php
try this ( if i understand your problem) 试试这个(如果我理解你的问题)
$output =array();
foreach($input as $k=>$v){
if(!empty($v)){
$output[$k]=$v;
}
}
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