GOOCODE - Find your code/scripts

0 When working with the Unicode character set, use the corresponding function instead of the native string function. For example, if a file is encoded as UTF-8 PHP code, if the strlen() function is wrong, use the mb_strlen() function instead.

If you use substr to intercept Chinese characters, garbled characters will appear, because substr is intercepted in bytes. That is, UTF-8 encoded Chinese, using substr interception, will only intercept 1/3 Chinese, of course, garbled. When UTF-8 is encoded, a Chinese character is 3 bytes. Similarly, different languages in other countries will produce multi-byte strings, so we use mb_strlen() to handle them.

0 Never trust external input, don't trust any data from a data source that is not under your direct control. In actual development, there is always someone intentionally or unintentionally injecting dangerous data into PHP code, so PHP security programming becomes important. Generally, we deal with external input security ideas: filtering input and verifying data.

Filtering input means escaping or deleting characters that are not safe from external data.

0 When we do web project development, we often need to periodically back up data, periodically restart a service or periodically execute a PHP program, etc., generally use Crontab under Linux and use scheduled tasks under Windows. This article focuses on the basics of using Crontab under Linux and performing PHP tasks.

Crontab is a commonly used timing execution tool for Unix/Linux systems that runs specified jobs without human intervention.

0 When we do web project development, we often need to periodically back up data, periodically restart a service or periodically execute a PHP program, etc., generally use Crontab under Linux and use scheduled tasks under Windows. This article focuses on the basics of using Crontab under Linux and performing PHP tasks.

Crontab is a commonly used timing execution tool for Unix/Linux systems that runs specified jobs without human intervention.

0 The main purpose of this specification is to allow the log class library to log information in a simple and generic way by receiving a PsrLogLoggerInterface object. The framework and the CMS content management system can extend this interface if necessary, but this specification is required to ensure that the log interface can still be properly connected when using third-party class library files. This article develops a generic interface specification for the log class library.

The implementers in this article refer to the class libraries or frameworks that implement the LoggerInterface interface. Conversely, they are the users of LoggerInterface.

0 This specification is an inheritance and extension of the PSR-1 basic code specification. This specification hopes to reduce the inconvenience caused by the different styles of the code when browsing the code of different authors by formulating a series of rules for normalizing PHP code.

When multiple programmers work together on multiple projects, a common coding specification is needed. The style specification in this article is derived from the common characteristics of multiple different project code styles. Therefore, the value of this specification is that we all follow This coding style is not about itself.

0 Encoding specifications and standards are extremely important when working with groups to develop PHP projects. Next, let's revisit the PHP code related specifications developed by the FIG organization. The current general specifications are: PSR-1 basic code specification, PSR-2 code style specification, PSR-3 log interface specification, PSR-4 Autoloader automatic loading specification.

The PSR-1 Basic Code Specification establishes standards for the basic elements of the code to ensure a high degree of interoperability between shared PHP code.

0 Monolog is a full and easy to expand log log library under php. There are many well-known php frameworks including Symfony, Laravel, CakePHP and so on that have Monolog built in. Monolog can send your logs to files, sockets, inboxes, databases and various web services.

Monolog follows the PSR3 interface specification and can be easily replaced with other log classes that follow the same specification. Monolog has good extensibility. Through the interfaces Handler, Formatter and Processor, you can expand and customize the Monolog library.

0 In the development, we often encounter the conversion between the array and XML, especially when dealing with interface development often used, such as the other side of the client POST a XML format data to the server, the server program is responsible for receiving Analysis, there is a need to data table data in XML format to provide third-party applications.

0 The normal site to bring the kind of parameters may be very long, especially in the printing of paper products such as corporate brochures to be printed on a long url, then very ugly, and few people will go to remember this site, Although it is now possible to use a two-dimensional code to open a long URL. But people can use short URLs to achieve beautiful links, especially those with limited number of applications such as microblogging.

Short URL implementation principle is that there is a data table configuration file will be short URL and the actual URL corresponding, when a short URL request, the program jump to the corresponding actual URL up, in order to achieve the URL of the visit.