Apa itu mysqli mysql dan pdo
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Specifically, the MySQLi extension provides the following extremely useful benefits over the old MySQL extension.. Show OOP Interface (in addition to procedural) Prepared Statement Support Transaction + Stored Procedure Support Nicer Syntax Speed Improvements Enhanced Debugging PDO Extension PHP Data Objects extension is a Database Abstraction Layer. Specifically, this is not a MySQL interface, as it provides drivers for many database engines (of course including MYSQL). PDO aims to provide a consistent API that means when a database engine is changed, the code changes to reflect this should be minimal. When using PDO, your code will normally "just work" across many database engines, simply by changing the driver you're using. In addition to being cross-database compatible, PDO also supports prepared statements, stored procedures and more, whilst using the MySQL Driver. To understand the difference between MySQL, MySQLi, and PDO, we must know about each one of them individually. These are nothing but the APIs of PHP that is used to access the MySQL databases and tables. The developers can choose either one of them for their project, however, it must be known that MySQL cannot be used with PHP 7 and its newer versions. However, developers can use MySQL with PHP 5, which is now deprecated. Let’s have some more information about each of them:
PDO-supported databases are as follows:
However, PDO does not allow the usage of all the features available in the present version of the MySQL server. For example, PDO doesn’t allow the support of MySQL’s multiple statements. Comparing MySQL, MySQLi, and PDO:
Connection to the database:MySQL: The MySQL code to connect to the database is: php
MySQLi: In case of MySQLi, there is just a one-line code. The user instantiates a MySQLi instance using the username, password, and name of the database. php
PDO: In case of PDO, a new PDO object must be created. php
A big advantage of using PDO is that it makes switching the project to another database simpler. Therefore, the only thing to do is to change the connection string and those queries that will not be supported by the new database. Error Handling: Error handling is the detection, and resolution of application, programming or communication errors. Error handling helps in maintaining the normal flow of program execution, as the errors in the program are deal gracefully, thus making the program run well. MySQL: php
The ‘die’ method is used for error handling in MySQL but it is not considered to be a good approach of error handling. This is because die abruptly ends the script and then display the error to the screen. This can make the database prone to hackers. MySQLi: The error handling in MySQLi if a bit easier. The mysqli::$error (mysqli_error) returns a string description of the last error. php
PDO: PDO has the best error handling method out of these three. This is because of the availability of the try-catch block. Also, there are some error modes that can be used for error handling.
Data Fetching: MySQL: General programming loops such as for, or while loop can be used for such a purpose. Suppose there is a table named ‘data’ in the database and we want to output the username from each row of the table. While loop can be used in the following way to do the work. php
MySQLi: MySQLi uses a loop for this purpose as well. The code, however, will be a bit different. php
PDO: PDO has many in-built statements that help in such cases.
API Support: When it comes to the API support, PDO provides an object-oriented approach. MySQLi provides a procedural way, much similar to the MySQL. This is the reason why developers coming from a MySQL background prefers using MySQLi. However, object-oriented programmers prefer PDO because of its compatibility with a large number of databases. Thus, object-oriented programmers prefer PDO, while procedural programmers prefer MySQL and MySQLi. Security: Database security is used to protect databases and the information they contain from the hackers and their attacks. Hackers generally use SQL injections to disrupt the database. Thus, security from the injections must be ensured. Both PDO and MySQLi provide SQL injection security. Suppose a hacker is trying to inject an SQL injection through the ‘firstname’ HTTP query parameter using the POST method: php
If the injection escapes, it will be added in the query “as it is”. Thus, it will delete all rows from the users table. In PDO, manual escaping is there to add security. php
The difference between PDO::quote() and mysqli_real_escape_string() is that the former escapes the string and the quote, while the latter will only escape the string and the quotes will have to be added manually. Apa perbedaan penggunaan mysqli dan PDO?PDO menggunakan pemrograman objek, mysqli extension tersedia dalam bentuk objek dan prosedural (diakses melalui fungsi-fungsi) sedangkan mysql extension sepenuhnya menggunakan pemograman prosedural.
Apa yang dimaksud dengan PDO?PHP Data Objects (PDO) merupakan sebuah extension/library yang hadir bersamaan dengan direleasenya PHP versi 5. PDO dibangun menggunakan bahasa C/C++ dan PDO menawarkan sebuah paradigma pemrograman berorientasi object (Object Oriented Programming/OOP) di dalam script PHP yang Anda bangun sehingga dapat berjalan lebih ...
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