php php从对象数组中删除对象
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php remove object from array of objects
提问by toddsby
I'm trying to remove an object from an array of objects by its' index. Here's what I've got so far, but i'm stumped.
我正在尝试通过其索引从对象数组中删除一个对象。这是我到目前为止所得到的，但我很难过。
$index = 2;
$objectarray = array(
0=>array('label'=>'foo', 'value'=>'n23'),
1=>array('label'=>'bar', 'value'=>'2n13'),
2=>array('label'=>'foobar', 'value'=>'n2314'),
3=>array('label'=>'barfoo', 'value'=>'03n23')
);
//I've tried the following but it removes the entire array.
foreach ($objectarray as $key => $object) {
if ($key == $index) {
array_splice($object, $key, 1);
//unset($object[$key]); also removes entire array.
}
}
Any help would be appreciated.
任何帮助，将不胜感激。
Updated Solution
更新的解决方案
array_splice($objectarray, $index, 1); //array_splice accepts 3 parameters
//(array, start, length) removes the given array and then normalizes the index
//OR
unset($objectarray[$index]); //removes the array at given index
$reindex = array_values($objectarray); //normalize index
$objectarray = $reindex; //update variable
回答by toddsby
array_splice($objectarray, $index, 1);
//array_splice accepts 3 parameters (array, start, length) and removes the given
//array and then normalizes the index
//OR
unset($objectarray[$index]); //removes the array at given index
$reindex = array_values($objectarray); //normalize index
$objectarray = $reindex; //update variable
回答by paskl
You have to use the function unseton your array.
您必须unset在数组上使用该函数。
So its like that:
所以它是这样的：
<?php
$index = 2;
$objectarray = array(
0 => array('label' => 'foo', 'value' => 'n23'),
1 => array('label' => 'bar', 'value' => '2n13'),
2 => array('label' => 'foobar', 'value' => 'n2314'),
3 => array('label' => 'barfoo', 'value' => '03n23')
);
var_dump($objectarray);
foreach ($objectarray as $key => $object) {
if ($key == $index) {
unset($objectarray[$index]);
}
}
var_dump($objectarray);
?>
Remember, your array will have odd indexes after that and you must (if you want) reindex it.
请记住，之后您的数组将具有奇数索引，您必须（如果需要）重新索引它。
$foo2 = array_values($objectarray);
回答by FabioG
in that case you won't need that foreach just unset directly
在这种情况下，您不需要直接取消设置 foreach
unset($objectarray[$index]);
