Can PHP directly return a binary stream to the client?

Can PHP directly return a binary stream to the client? Must be turned into a string to echo???? Use echo??? only // 要返回给客户端的JSON$json ="{\"A\":\"我爱你\",\"B\":\"PHP\"}";// 转成数组$arr = array_values(unpack("C*", $json));// 加密数组$arr = encryptArray($arr);/

Find data with the same number of bits in a field

You want to find the same data as the second-to-last value of the UID Like what 1000000005 1000000006 1000000007 1000000008 1000000023//different do not 1000000009 To implement such logic, what to do $uid = I('get.uid', 0, 'intval');//假设用户ID:1000000

Linux-Remember there was a bug that allowed visitors to download a php source file, what was it called?

Remember to see a loophole, you can let PHP stop parsing, and Apache is still working normally, so that the visitor in the address bar to enter the file name will see the full PHP source files. We now have a project that has a system architecture

C language written PHP framework, is it necessary to C language to use?

C language written PHP framework, is it necessary to C language to use? Reply content: C language written PHP framework, is it necessary to C language to use? No, C language written PHP framework is still PHP framework, just the framework of

Class ' mongoclient ' not found

Environment: PHP5.6.2 Apache2 Installing Php-mongo Driver [Jack:~ $] sudo pecl install mongopecl/mongo is already installed and is the same as the released version 1.6.14[Jack:~ $] vi /etc/php.iniextension=mongo.so[Jack:~ $] apachectl restart I

PHP query MySQL in the existence of an ID is the use of which statement is high efficiency?

I want to query a table in MySQL to see if an ID exists? Which of the following two methods is more efficient? Method One: $sql="SELECT COUNT(*) FROM `table` WHERE id=10";$rst = mysql_query($sql);$row = mysql_fetch_row($rst);if($row[0]){ //通过$row[0]

Baidu map lbs Cloud Search Custom column filter conditions can not be used, solve Ah!

_version: 67create_time: "2016-04-20 23:59:37"geotable_id: 134032id: 232078is_index_field: 1is_search_field: 1is_sortfilter_field: 0is_unique_field: 0key: "shop_type"max_length: 512modify_time: "2016-04-21 00:15:34"name: "店铺类型"type: 3 The above is

Nginx redirect problem, how to add a level two directory?

The company already has a master station www.a.com. Now want to increase the training module, in order to maintain the previous functions, and the corresponding authorization, and other functions, now want to configure a www.a.com/edu, the

How to ensure the security of SMS interface without graphics verification code?

For example: SMS Interface Address--http://a.php.com/api.php Because other domain requests, such as http://xx.php.com, are required, the interface adds header("Access-Control-Allow-Origin: *"); Then do not add graphics verification code, how to

CodeIgniter Multi-module configuration issues

I want to use CodeIgniter to develop a project, the front and rear stations are independent of the two modules; Built two entry files: home.php and admin.php, respectively, corresponding to the foreground and backstage; Application also built two

Can I add tokens to the form to prevent brute force?

Premise: Here only token on the meaning of anti-violence to discuss, do not involve other anti-violence measures, such as verification code. See a lot of articles that add token can prevent brute force, but don't say why. According to my brother's

About rollback operations

PHP Development of CMS program, how to implement version rollback operation in the background, ask the expert answer Like Www/blog, this is the online program. Each backup is www/blog01 www/blog02 ... Is this a directory structure? or what? From

JavaScript-click anywhere on the page to get the contents of the text box and replace

Click the position in the red box in the above image to replace the input text box as The first question comes, 如何控制实现一个页面中只能出现一个文本框呢 huh? Click on 一图 the other three locations not to complete the replacement; The second question: I click on the

Alibaba Server FTP connection problem

Configure Ali Server Installation FTP is successful, started, iptables not open, but FTP either root user or new add user can not connect, root connection error: Server said:permission denied. New User connection error: Error- 203:miscellaneous

The session is stored in Redis, which is a lot more records.

I changed it in the php.ini. session.save_handler = files -> session.save_handler = redissession.save_path = "/tmp" -> session.save_path = "tcp://127.0.0.1:6379" After the changes have been visited, there are so many more fields, but

About Nginx Domain binding problem

My domain name is configured under a number of two-level domain names, but not configured with the top-level www domain name. Now suddenly found that the WWW and the top-level domain is bound to my two-level domain name of the site up However, the

What are the differences between php5.3 and version 5.2 for defining constants??

I am now using the Phpstudy combo package, which is free to switch PHP versions.php5.2 (default), but in the php5.2 version, constants are defined with const and syntax errors occur.But there is no problem with define definition.The code is as

Yii2 How do I customize error messages in model validation?

namespace backend\modules\article\models;use yii\db\ActiveRecord;class Category extends ActiveRecord{ public static function tableName() { return 'category'; } public function rules() { return [

WeChat public platform related development issues

A friend has a certified service number has been bound to third-party micro-commerce, such as have praise, now let help do the following functions. 1. User A is interested in generating a specific QR code and sharing it. 2. Other people scan the QR

How do indexed arrays in PHP assign values to objects?

The existing objects are defined as follows: class User{ public $name; public $age; public $sex; public $info; public $school; public $salary;} The existing index array is as follows: $user = [ 'name' => 'zhangsan', 'age' =>

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