在in_array()方法中,第一个参数是反序列化对象,第二个参数的数组中有tostring返回的字符串的时候tostring会被调用 反序列化的对象作为class_exists()的参数的时候(用的少)<?php highlight_file(__FILE__); class sunset { public $name = 'makabaka'; function __co
<?php function change($str){ return str_replace("x","xx",$str); } $name = $_GET['name']; $age = "I am 11"; $arr = array($name,$age); echo "反序列化字符串:"; var_dump(serialize($arr)); echo ""; echo "过滤后:"; $old = change(serialize($arr)); $new = unserializ...
if ( !file_exists('blocked_ips.txt') ) { $deny_ips = array( '127.0.0.1', '192.168.1.1', '83.76.27.9', '192.168.1.163' ); } else { $deny_ips = file('blocked_ips.txt'); } // read user ip adress: $ip = isset($_SERVER['REMOTE_ADDR']) ? trim($_SERVER['REMOTE_ADDR'])...
file_put_contents('cache.txt', serialize($data)); $data = unserialize(file_get_contents('cache.txt')); ``` ### 2. SQL注入防护 使用准备好的语句(prepared statements)防止SQL注入。 ```php <?php $stmt = $pdo->prepare('SELECT * FROM users WHERE email = :email'); $stmt->execute(['...
a:array代表是数组,后面的3说明有三个属性。 i:代表是整型数据int,后面的0是数组下标(O代表Object,也是类)。 s:代表是字符串,后面的2是因为aa长度为2,是字符串长度值。 后面类推。 同时要注意序列化后只有成员变量,没有成员函数。 注意如果变量前是protected,...
call_user_func_array 同call_user_func 可传入一个数组带入多个参数调用函数 call_user_func_array ('file_put_contents', ['1.txt','6666']); create_function 根据传递的参数创建匿名函数,并为其返回唯一名称 利用需要第二个参数可控 且创建的函数被执行 $f = create_function('','system($_GET[123]...
In the example below, the print_r() function returns the array’s information. It does not print the items on the webpage. A file filename.txt will be created in the root directory where the array is printed. Check the print_r() in PHP manual to know more about the function....
file_exists(DATA_DIR)) { mkdir(DATA_DIR); } } else { echo "需要定义数据目录"; exit; } if (!class_exists('Template')) { class Template { protected $dir = TEMPLATE_DIR . DIRECTORY_SEPARATOR; protected $vars = array(); public function __construct($dir = null) { if ($dir !== ...
}$pieces=$ossClient->generateMultiuploadParts($uploadSize,$partSize);$responseUploadPart=array();$uploadPosition=0;foreach($piecesas$i=>$piece) {$fromPos=$uploadPosition+ (integer)$piece[$ossClient::OSS_SEEK_TO];$toPos= (integer)$piece[$ossClient::OSS_LENGTH] +$fromPos-1;$upOptions=...
2 * Get the validation rules that apply to the request. 3 * 4 * @return array<string, \Illuminate\Contracts\Validation\ValidationRule|array<mixed>|string> 5 */ 6public function rules(): array 7{ 8 return [ 9 'title' => 'required|unique:posts|max:255', 10 'body' => 'required',...