array_diff_ukey() - 语法
array_diff_ukey ( $array1, $array2 [, $array3...,callback $key_compare_func] );
它将array1中的密钥与array2中的键进行比较，并返回差异。
| Sr.No | Parameter & Description |
|---|---|
| 1 |
array1(必需) 第一个数组是将与其他数组进行比较的数组。 |
| 2 |
array2(必需) 它是要与第一个数组进行比较的数组 |
| 3 |
array3(可选) 它是要与第一个数组进行比较的数组 |
| 4 |
Key_Compare_func(必需) 它是一个要使用的回调函数。 |
array_diff_ukey() - 返回值
它返回一个数组，其中包含array1中不存在于任何其他数组中的所有条目。
array_diff_ukey() - 示例
<?php
function key_compare_func($v1,$v2) {
if ($v1 === $v2) {
return 0;
}
</span><span class="kwd">if</span><span class="pln"> </span><span class="pun">(</span><span class="pln">$v1</span><span class="pun">></span><span class="pln">$v2</span><span class="pun">)</span><span class="pln"> </span><span class="pun">{</span><span class="pln">
</span><span class="kwd">return</span><span class="pln"> </span><span class="lit">1</span><span class="pun">;</span><span class="pln">
</span><span class="pun">}</span><span class="kwd">else</span><span class="pln"> </span><span class="pun">{</span><span class="pln">
</span><span class="kwd">return</span><span class="pln"> </span><span class="pun">-</span><span class="lit">1</span><span class="pun">;</span><span class="pln">
</span><span class="pun">}</span><span class="pln">
}
input1</span><span class="pun">=</span><span class="pln">array</span><span class="pun">(</span><span class="lit">0</span><span class="pun">=></span><span class="str">"banana"</span><span class="pun">,</span><span class="pln"> </span><span class="lit">1</span><span class="pun">=></span><span class="str">"orange"</span><span class="pun">,</span><span class="pln"> </span><span class="lit">2</span><span class="pun">=></span><span class="str">"grapes"</span><span class="pun">);</span><span class="pln">
input2=array(3=>"apple",1=>"apricot", 5=>"mango");
print_r(array_diff_ukey(input2,"key_compare_func"));
?>
这将产生以下输出-
Array ( [0]=>banana [2]=>grapes )
<h2 id="h22">参考链接</h2><p><a target="_blank" href="https://www.learnfk.com/php/php-function-array-diff-ukey.html" style="">https://www.learnfk.com/php/php-function-array-diff-ukey.html</a></p>
