(PHP 4 >= 4.0.1, PHP 5, PHP 7)
array_diff — 锟斤拷锟斤拷锟斤拷锟斤拷牟罴�
$array1
, array $array2
[, array $...
] ) : array
锟皆憋拷 array1 锟斤拷锟斤拷锟斤拷一锟斤拷锟斤拷锟竭讹拷锟斤拷锟斤拷椋拷锟斤拷锟斤拷锟�
array1 锟叫碉拷锟角诧拷锟斤拷锟斤拷锟斤拷 array 锟斤拷锟街碉拷锟�
array1要锟斤拷锟皆比碉拷锟斤拷锟斤拷
array2锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟叫比斤拷
...锟斤拷锟斤拷锟斤拷冉系锟斤拷锟斤拷锟�
锟斤拷锟斤拷一锟斤拷锟斤拷锟介，锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟�
array1 锟叫碉拷锟角诧拷锟斤拷锟轿猴拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟叫碉拷值锟斤拷注锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷洹�
Example #1 array_diff() 锟斤拷锟斤拷
<?php
$array1 = array("a" => "green", "red", "blue", "red");
$array2 = array("b" => "green", "yellow", "red");
$result = array_diff($array1, $array2);
print_r($result);
?>
锟斤拷 $array1 锟叫讹拷纬锟斤拷值锟街狄伙拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟轿拷锟�
Array
(
[1] => blue
)
Note:
锟斤拷锟斤拷锟斤拷元锟斤拷锟斤拷 (string) $elem1 === (string) $elem2 时锟斤拷锟斤拷为锟斤拷锟斤拷同锟侥★拷也锟斤拷锟斤拷说锟斤拷锟斤拷锟街凤拷锟斤拷锟侥憋拷锟斤拷锟揭伙拷锟斤拷锟绞憋拷锟�
Note:
注锟解本锟斤拷锟斤拷只锟斤拷锟斤拷硕锟轿拷锟斤拷锟斤拷械锟揭晃拷锟斤拷锟饺伙拷锟斤拷锟斤拷锟� array_diff($array1[0], $array2[0]); 锟斤拷锟斤拷锟斤拷锟轿拷取锟�