blocks|key|1221290|text|使用unset()|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|1221291|unset($array['key1']);|code-block|syntax|javascript|1221292|entityMap|0|LINK|mutability|MUTABLE|url|http://php.net/manual/en/function.unset.php^0|2|7|2|7|0|0|0^^$0|@$1|2|3|4|5|6|7|S|8|@$9|T|A|U|B|C]]|D|@$9|V|A|W|1|X]]|E|$]]|$1|F|3|G|5|H|7|Y|8|@]|D|@]|E|$I|J]]|$1|K|3|-4|5|6|7|Z|8|@]|D|@]|E|$]]]|L|$M|$5|N|O|P|E|$Q|R]]]]

Use <a href="http://php.net/manual/en/function.unset.php" rel="noreferrer"><code>unset()</code></a>:

<pre><code>unset($array['key1']);
</code></pre>

blocks|key|1221305|text|使用unset|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|1221306|unset($array['key1'])|code-block|syntax|javascript|1221307|entityMap^0|2|5|0|0^^$0|@$1|2|3|4|5|6|7|M|8|@$9|N|A|O|B|C]]|D|@]|E|$]]|$1|F|3|G|5|H|7|P|8|@]|D|@]|E|$I|J]]|$1|K|3|-4|5|6|7|Q|8|@]|D|@]|E|$]]]|L|$]]

Using <code>unset</code>:

<pre><code>unset($array['key1'])
</code></pre>

blocks|key|1221349|text|您可能需要两个或更多循环，具体取决于您的数组：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1221350|$arr[$key1][$key2][$key3]=$value1;+//+....etc

foreach+($arr+as+$key1+=>+$values)+{
++foreach+($key1+as+$key2+=>+$value)+{
++unset($arr[$key1][$key2]);
++}
}|code-block|syntax|javascript|1221351|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

You may need two or more loops depending on your array:

<pre><code>$arr[$key1][$key2][$key3]=$value1; // ....etc

foreach ($arr as $key1 =&gt; $values) {
 foreach ($key1 as $key2 =&gt; $value) {
 unset($arr[$key1][$key2]);
 }
}
</code></pre>

blocks|key|1007068|text|使用此函数可以在不修改原始数组的情况下删除特定的键数组：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1007069|function+array_except($array,+$keys)+{
++return+array_diff_key($array,+array_flip((array)+$keys));+++
}+|code-block|syntax|javascript|1007070|第一个参数传递所有数组，第二个参数设置要移除的键数组。|1007071|例如：|1007072|$array+=+[
++++'color'+=>+'red',+
++++'age'+=>+'130',+
++++'fixed'+=>+true
];
$output+=+array_except($array,+['color',+'fixed']);
//+$output+now+contains+['age'+=>+'130']|1007073|entityMap^0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|O|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|P|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|Q|8|@]|9|@]|A|$]]|$1|I|3|J|5|6|7|R|8|@]|9|@]|A|$]]|$1|K|3|L|5|D|7|S|8|@]|9|@]|A|$E|F]]|$1|M|3|-4|5|6|7|T|8|@]|9|@]|A|$]]]|N|$]]

Use this function to remove specific arrays of keys without modifying the original array:

<pre><code>function array_except($array, $keys) {
 return array_diff_key($array, array_flip((array) $keys)); 
} 
</code></pre>

First param pass all array, second param set array of keys to remove.

For example:

<pre><code>$array = [
 'color' =&gt; 'red', 
 'age' =&gt; '130', 
 'fixed' =&gt; true
];
$output = array_except($array, ['color', 'fixed']);
// $output now contains ['age' =&gt; '130']
</code></pre>

blocks|key|1007104|text|您可以使用Laravel+helpers来完成此操作。|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|1007105|first+helper，方法Arr::except|1007106|$array+=+['name'+=>+'Desk',+'price'+=>+100];

$filtered+=+Arr::except($array,+['price']);

//+['name'+=>+'Desk']|code-block|syntax|javascript|1007107|第二帮助器:方法Arr::pull|1007108|$array+=+['name'+=>+'Desk',+'price'+=>+100];

$name+=+Arr::pull($array,+'name');

//+$name:+Desk

//+$array:+['price'+=>+100]|1007109|entityMap|0|LINK|mutability|MUTABLE|url|https://laravel.com/docs/8.x/helpers#arrays|1|https://laravel.com/docs/8.x/helpers#method-array-except|2|https://laravel.com/docs/8.x/helpers#method-array-pull^0|D|7|0|0|F|B|1|0|0|8|9|2|0|0^^$0|@$1|2|3|4|5|6|7|10|8|@]|9|@$A|11|B|12|1|13]]|C|$]]|$1|D|3|E|5|6|7|14|8|@]|9|@$A|15|B|16|1|17]]|C|$]]|$1|F|3|G|5|H|7|18|8|@]|9|@]|C|$I|J]]|$1|K|3|L|5|6|7|19|8|@]|9|@$A|1A|B|1B|1|1C]]|C|$]]|$1|M|3|N|5|H|7|1D|8|@]|9|@]|C|$I|J]]|$1|O|3|-4|5|6|7|1E|8|@]|9|@]|C|$]]]|P|$Q|$5|R|S|T|C|$U|V]]|W|$5|R|S|T|C|$U|X]]|Y|$5|R|S|T|C|$U|Z]]]]

you can do it using Laravel <a href="https://laravel.com/docs/8.x/helpers#arrays" rel="nofollow noreferrer">helpers</a>:
first helper, method <a href="https://laravel.com/docs/8.x/helpers#method-array-except" rel="nofollow noreferrer">Arr::except</a>:
<pre><code>$array = ['name' =&gt; 'Desk', 'price' =&gt; 100];

$filtered = Arr::except($array, ['price']);

// ['name' =&gt; 'Desk']
</code></pre>
second helper: method <a href="https://laravel.com/docs/8.x/helpers#method-array-pull" rel="nofollow noreferrer">Arr::pull</a>
<pre><code>$array = ['name' =&gt; 'Desk', 'price' =&gt; 100];

$name = Arr::pull($array, 'name');

// $name: Desk

// $array: ['price' =&gt; 100]
</code></pre>

Given an associative array:

<pre><code>array("key1" =&gt; "value1", "key2" =&gt; "value2", ...)
</code></pre>

How would I go about removing a certain key-value pair, given the key?

How can I remove a key and its value from an associative array?

给定一个关联数组：array("key1" => "value1", "key2" => "value2", ...)在给定密钥的情况下，我如何删除某个键值对？

问如何从关联数组中删除键及其值？
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