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Learning PHP 7

Learning PHP 7

By : L Zapata (GBP)
3.4 (10)
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Learning PHP 7

Learning PHP 7

3.4 (10)
By: L Zapata (GBP)

Overview of this book

PHP is a great language for building web applications. It is essentially a server-side scripting language that is also used for general purpose programming. PHP 7 is the latest version with a host of new features, and it provides major backwards-compatibility breaks. This book begins with the fundamentals of PHP programming by covering the basic concepts such as variables, functions, class, and objects. You will set up PHP server on your machine and learn to read and write procedural PHP code. After getting an understanding of OOP as a paradigm, you will execute MySQL queries on your database. Moving on, you will find out how to use MVC to create applications from scratch and add tests. Then, you will build REST APIs and perform behavioral tests on your applications. By the end of the book, you will have the skills required to read and write files, debug, test, and work with MySQL.
Table of Contents (12 chapters)
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11
Index

Inserting data


We have created the perfect tables to hold our data, but so far they are empty. It is time that we populate them. We delayed this moment as altering tables with data is more difficult than when they are empty.

In order to insert this data, we will use the INSERT INTO command. This command will take the name of the table, the fields that you want to populate, and the data for each field. Note that you can choose not to specify the value for a field, and there are different reasons to do this, which are as follows:

  • The field has a default value, and we are happy using it for this specific row

  • Even though the field does not have an explicit default value, the field can take null values; so, by not specifying the field, MySQL will automatically insert a null here

  • The field is a primary key and is autoincremental, and we want to let MySQL take the next ID for us

There are different reasons that can cause an INSERT INTO command to fail:

  • If you do not specify the value of a field and MySQL...

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Learning PHP 7
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