Error: Call to undefined function array_in_array

sycru 更新于2024-06-16

問(wèn)題描述

Error: Call to undefined function array_in_array 。需要判斷一個(gè)數(shù)組是否在另一個(gè)數(shù)組內(nèi)，但php的這個(gè)內(nèi)置的函數(shù)不存在。
更正，正確寫(xiě)法應(yīng)該是寫(xiě)in_array

程序代碼

$arrayA?=?array('apple',?'banana',?'orange');
$arrayB?=?array('orange',?'banana',?'apple',?'pear');

$result?=?array_in_array($arrayA,?$arrayB);
if?($result)?{
???$fieldin=1;
}?else?{$fieldin=0;
????
}

報(bào)錯(cuò)信息

Error: Call to undefined function app\controller\api\home\array_in_array() in
D:\UPUPW_ANK_W64\WebRoot\Vhosts\WEBMAN_SITE\mgl\app\controller\api\home\IndexController.php:66<br />
Stack trace:<br />
#0 D:\UPUPW_ANK_W64\WebRoot\Vhosts\WEBMAN_SITE\mgl\vendor\workerman\webman-framework\src\App.php(319): app\controller\api\home\IndexController->view()<br />
#1 D:\UPUPW_ANK_W64\WebRoot\Vhosts\WEBMAN_SITE\mgl\vendor\workerman\webman-framework\src\App.php(141): Webman\App::Webman\{closure}()<br />
#2 D:\UPUPW_ANK_W64\WebRoot\Vhosts\WEBMAN_SITE\mgl\vendor\workerman\workerman\Connection\TcpConnection.php(646): Webman\App->onMessage()<br />
#3 D:\UPUPW_ANK_W64\WebRoot\Vhosts\WEBMAN_SITE\mgl\vendor\workerman\workerman\Events\Select.php(311): Workerman\Connection\TcpConnection->baseRead()<br />
#4 D:\UPUPW_ANK_W64\WebRoot\Vhosts\WEBMAN_SITE\mgl\vendor\workerman\workerman\Worker.php(1488): Workerman\Events\Select->loop()<br />
#5 D:\UPUPW_ANK_W64\WebRoot\Vhosts\WEBMAN_SITE\mgl\vendor\workerman\workerman\Worker.php(1405): Workerman\Worker::forkWorkersForWindows()<br />
#6 D:\UPUPW_ANK_W64\WebRoot\Vhosts\WEBMAN_SITE\mgl\vendor\workerman\workerman\Worker.php(560): Workerman\Worker::forkWorkers()<br />
#7 D:\UPUPW_ANK_W64\WebRoot\Vhosts\WEBMAN_SITE\mgl\vendor\workerman\webman-framework\src\support\App.php(131): Workerman\Worker::runAll()<br />
#8 D:\UPUPW_ANK_W64\WebRoot\Vhosts\WEBMAN_SITE\mgl\start.php(4): support\App::run()<br />
#9 {main}

 620  1 0

1個(gè)回答

huazai 2024-06-21

$arrayA = array('apple', 'banana', 'orange');
$arrayB = array('orange', 'banana', 'apple', 'pear');

//array_diff() 函數(shù)返回兩個(gè)數(shù)組的差集，即第一個(gè)數(shù)組中存在但第二個(gè)數(shù)組中不存在的元素。如果 array_diff() 的結(jié)果為空數(shù)組，那么第一個(gè)數(shù)組中的所有元素都存在于第二個(gè)數(shù)組中
$result = array_diff($arrayA, $arrayB);
echo empty($result) ? "存在" : "不存在";