php數組操作如何實現(xiàn)鍵名比較與差集、交集賦值
php數組操作如何實現(xiàn)鍵名比較與差集、交集賦值呢？下面是小編給大家提供的實現(xiàn)方法，大家可以參考閱讀，更多詳情請關注應屆畢業(yè)生考試網。
該實例主要實現(xiàn)對數組的各種常見操作。如對鍵名比較計算數組的差集，計算差集，給指定數組中插入一個元素，反轉數組與交集賦值新的數組等。
代碼如下:
/pic/p>
function key_compare_func($key1,$key2)
{
if($key1==$key2) /pic/p>
return 0; /pic/p>
else if($key1>$key2) /pic/p>
return 1; /pic/p>
else /pic/p>
return -1; /pic/p>
}
/pic/p>
$array1=array('blue'=>1,'red'=>2,'green'=>3,'purple'=>4);
$array2=array('green'=>5,'blue'=>6,'yellow'=>7,'cyan'=>8);
/pic/p>
$result=var_dump(array_diff_ukey($array1,$array2,'key_compare_func'));
print_r($result);
/pic/p>
$array1=array("a"=>"green","red","blue","red"); /pic/p>
$array2=array("b"=>"green","yellow","red"); /pic/p>
$result=array_diff($array1,$array2); /pic/p>
print_r($result); /pic/p>
/pic/p>
$result=array_fill(5,6,'banana'); /pic/p>
print_r($result); /pic/p>
/pic/p>
function odd($var)
{
return($var%2==1); /pic/p>
}
function even($var)
{
return($var%2==0); /pic/p>
}
/pic/p>
$array1=array("a"=>1,"b"=>2,"c"=>3,"d"=>4,"e"=>5);
$array2=array(6,7,8,9,10,11,12);
echo "過濾奇數:n";
print_r(array_filter($array1,"odd")); /pic/p>
echo "過濾偶數:n";
print_r(array_filter($array2,"even")); /pic/p>
/pic/p>
$trans=array("a"=>1,"b"=>2,"c"=>3); /pic/p>
$result=array_flip($trans); /pic/p>
print_r($result); /pic/p>
/pic/p>
$array1=array("a"=>"green","b"=>"brown","c"=>"blue","red");
$array2=array("a"=>"green","yellow","red");
$result_array=array_intersect_assoc($array1,$array2); /pic/p>
print_r($result_array); /pic/p>
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