Baransel Arslan - Web Development Tips & Tutorials

What is the print() Function?

Intro When it comes to version control systems, there are few software that can beat GIT in performance and relevance.

We will cover Flutter ListView and Features, Listview comparison on Android.

We will talk about the most used Flutter button types and their features.

We will talk about the widgets we use while designing our screen in Flutter in general, and their features and usage areas.

We will discuss the concept of widget, which is one of the structures we hear the most in Flutter.

What is Flutter?

Every function in dart is an object.

The map structure is one of the list types that allows us to keep more than one data.

pub.dev/youtube_video_info github.com/kaex/youtube_video_info This is a lightweight⚡ package to fetch video info for YouTube from the url To install, add to pubspec.yaml flutter: sdk: flutter youtube_video_info: ^1.0.0 and then run flutter pub get Import…

Set structure is a type of list that we use to hold multiple data like List.

In the Dart programming language, there is no Array construct.

What we call Ternary If is a short use of the if control structure.

In addition to general data types such as String, integer, we use different; We will talk about 2 important data types. var dynamic The var data type does not have a specific value.

Here is a summary of some useful commands: Command (Windows) Command (Mac OS - GNU/Linux) Description exit exit closes the window cd cd change directory cd pwd show current directory dir ls list directory/files copy cp copy file move mv move file mkdir mk…

How about creating a directory on your desktop to do it hands-on?

Now, let’s go to our Desktop directory: $ cd Desktop Let’s see if it really has changed: $ pwd /Users/baransel/Desktop Pro Tip: If you type cd D and press tab on your keyboard, the command line completes the rest of the name, and you navigate faster.

So what’s inside?

It would be nice to know where we are, wouldn’t it?

We will use the file_exists() function to be aware of the existence of the files, to change them if they are, or to create them.

You can destroy the file you want with the unlink() function, which we will see as the opposite of the file creation function.

We will use the w mode and the fwrite() function to write files.

To perform this operation, we will use the r mode in fopen() and the fread() function to access the content.

Before we can read, modify or delete the contents of the files, we need to open them in PHP.

Let’s explain with a useful example.

We write the expressions of the contents that we want to capture and separate in regular expressions in parentheses.

Let’s come to using these useful operations on PHP.

With the ^ and $ characters, we can express what the beginning, or the end will look like.

We can do it with a similar expression with the example on this post.

Let’s now come to the example usage of the characters we listed in the table on this post.

Regex patterns are written between the two “/” (slash) signs.

Regular expressions have special characters with lots of meaning and expressions.

We can run our edit and delete queries with the exec method, which works in the same way as the insert method above.

We are preparing our line to insert with the binding method, and the insert method.

There are two different methods for listing the contents in the table.

With the getRow method, we can get a row that will be returned by the query we wrote.

Let’s get to the main jokes of the class.

Let’s take a look at the downsides.

The query method in the example last post is a method that I combine with the PDO’s binding feature.

Almost all amateur PHP and MySQL projects have SQL injection vulnerability.

As with the old MySQL connection, even if you do not close the connection you opened, PHP automatically disconnects at the end of the process.

Another important feature of PDO is that it can undo or apply the queries, which are expressed as transaction, when desired.

We will use the exec method to add a new record.

For this, after calling our query with query, we will get the first result with fetch. <?

For this, we will use the query method I mentioned before. <?

Thanks to the binding method, which is one of the most important features of PDO, we can place our variables safely and properly in the queries we prepare.

If we do not expect to get a result from the query we will make, we should use the “exec” method, if a result is desired, the query method.

Methods that we send queries such as query or exec return false if they encounter an error when they execute the query.

In general, when defining a PDO class, we specify the connection events with a DSN, or “Data Source Name”.

PDO (PHP Data Objects / PHP Data Objects) in a nutshell; an interface that provides lightweight and consistent access to the database.