比较键和值两个数组(使用两个用户定义的函数进行比较)并返回匹配项:
<?php
function myfunction_key($a,$b)
{
if ($a===$b)
{
return 0;
}
return ($a>$b)?1:-1;
}
function myfunction_value($a,$b)
{
if ($a===$b)
{
return 0;
}
return ($a>$b)?1:-1;
}
$a1=array("a"=>"red","b"=>"green","c"=>"blue");
$a2=array("a"=>"red","b"=>"green","c"=>"green");
$result=array_uintersect_uassoc($a1,$a2,"myfunction_key","myfunction_value");
print_r($result);
?>
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array_uintersect_uassoc() 函数比较键和值两个或多个数组,并返回匹配项。
笔记:该函数使用二用户定义的比较函数;键用于第一个函数,值用于第二个函数!
此函数比较两个(或多个)数组的键和值,并返回一个包含以下条目的数组数组1存在于数组2、数组3、ETC。
array_uintersect_uassoc(
array1, array2, array3, ..., myfunc_key, myfunc_value)
Parameter | Description |
---|---|
array1 | Required. The array to compare from |
array2 | Required. An array to compare against |
array3,... | Optional. More arrays to compare against |
myfunc_key | Required. The name of the user-defined function that compares the array keys. A string that define a callable comparison function. The comparison function must return an integer <, =, or > than 0 if the first argument is <, =, or > than the second argument |
myfunc_value | Required. The name of the user-defined function that compares the array values. A string that define a callable comparison function. The comparison function must return an integer <, =, or > than 0 if the first argument is <, =, or > than the second argument. |
返回值: | 返回一个包含条目的数组数组1存在于所有其他数组中 |
---|---|
PHP 版本: | 5+ |
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