请教：这段 PHP 代码中，$publickey = $publickey["key"]; 这一行是什么意思？

[githere]

<?php


if (isset($_SERVER['HTTPS']) )

{
echo "SECURE: This page is being accessed through a secure connection.";
}

else

{
echo "UNSECURE: This page is being access through an unsecure connection.";
}

$config = array(

"digest_alg" => "sha512",

"private_key_bits" => 385,

"private_key_type" => OPENSSL_KEYTYPE_RSA,

);

// Create the keypair

$res=openssl_pkey_new($config);

// Get private key

openssl_pkey_export($res, $privatekey);

// Get public key

$publickey=openssl_pkey_get_details($res);

$publickey= $publickey["key"];

echo "Private Key:<BR>$privatekey

Public Key:<BR>$publickey<BR><BR>";

$cleartext = '1234 567gongji 珍珠港虎虎虎';

echo "Clear text:
$cleartext<BR><BR>";

openssl_public_encrypt($cleartext, $crypttext, $publickey);

echo "Crypt text:$crypttext<BR><BR>";

openssl_private_decrypt($crypttext, $decrypted, $privatekey);

echo "Decrypted text:<BR>$decrypted<br><br>";

?>

["key"] 这个能理解成 php 保留的数组值吗？

[dcsite]

把二维数组变成一个变量。

$publickey["key"] = 'aaa';
$publickey["value"] = 'bbb';

$publickey = $publickey["key"];

echo $publickey;

// aaa

[lsido]

弱类型就是这样的
你想让他是啥他就能马上是啥

[xxser]

建议多补补 PHP 基础，一楼已经有答案了。

[ysc3839]

$publickey 是个数组变量，获取这个数组中 "key" 的值，然后赋值给 $publickey。

[githere]

@ysc3839 @dcsite thanks

[580a388da131]

别的地方用不到且懒得起名字就这么操作

[linxl]

这人必须开除，想个变量名都懒得想

[rxzxf1993]

@linxl 哈哈没毛病