4 Tips to help you create PHP console tools

Also, if you want to pass a string with line breaks to $argv, enclosing the string in "" or ' will make it work as intended

For example, prepare a source that simply var_dumps the following arguments directly

<?php var_dump($argv);

 
Next, let's run the source code with a string containing line breaks as an argument

php test.php hogehoge 'I'll add a newline' # When you run the above command, the following will be displayed: array(3) { [0] => string(8) "test.php" [1] => string(8) "hogehoge" [2] => string(22) "I'll add a newline" }

 
It looks like a lot of things will be progressing

Adding color to error messages (+bonus)

If you want to have some fun, why not try coloring your error messages?

In Linux, you can make the echoed string colorful and change the background color

This can easily be achieved using the same technique

<?php # hogehogeを赤字で表示するコード echo "\e[31mhogehoge\e[m"; echo "\033[31mhogehoge\033[m";

 
Both of the above codes display "hogehoge" in red, but at first glance it's hard to understand what they mean, so
let's break them down a bit.

<?php # hogehogeを赤字で表示するコード echo "\e[31m". "hogehoge". "\e[m"; echo "\033[31m". "hogehoge". "\033[m";

 
Let's separate the "hogehoge" part from the rest. Then, we can vaguely see a pattern. It
seems that you should enclose the string you want to change the color of with "\e[**m" or "\033[**m".

The only remaining part is the "31" at the beginning, which
specifies the text color.
We split "31" into "3" and "1," where "3" specifies the text color and "1" specifies red.
So, to change the text color to something else, you change "1" to "2," and so on.

I mentioned that the "3" in "31" specifies the text color, but if it becomes "4", it specifies the background color
.

<?php echo "\e[41m". "hogehoge". "\e[m"; echo "\033[41m". "hogehoge". "\033[m";

 
The above code will result in a red background

If you want to change both the text color and the background color, place them side by side with a semicolon

<?php echo "\e[31;41m". "hogehoge". "\e[m"; echo "\033[31;41m". "hogehoge". "\033[m";

 
The code above will just display a red rectangle and no text, but it will achieve its purpose

As for more advanced features, you can also use this setting to underline, bold, invert the text and background colors, and make the text blink

<?php echo "\e[31;1m". "hogehoge". "\e[m"; // 赤い太字で表示 echo "\e[31;42;1m". "hogehoge". "\e[m"; // 赤い太字を緑の背景で表示 echo "\e[7m". "hogehoge". "\e[m"; // 文字色と背景色を反転して表示

 
Inversion and other features are less likely to strain your eyes, so you can use them alone

Command options to use when you want to quickly check only specific code

When creating console tools, you
might occasionally have small questions, such as what format the execution result will take or whether a particular way of writing the code will cause an error.
In such cases, I'd like to introduce the PHP option "-r" that you can quickly try out.

For example, let's say you want to change permissions.
You can quickly change them with the chmod function, but if you want to test if it works, you don't have to write test code; you can write PHP code directly in the command line. What I
like about it is that you don't even need the PHP opening tag, "php".

php -r "chmod('/path/to/hoge', 777)" # You can see the results immediately with the ls command!

 
I intended to write it in a way that was similar to `chmod 777 /path/to/hoge`, but the permissions weren't actually changed. I'm
trying to figure out what's wrong by reading the documentation and going through trial and error to find the correct solution.

Edit the file → Save → Go to console → Run the php file → (´・ω・｀)

To be honest, repeating this process over and over is a pain, so if you can extract something and test it easily like in the example above, it's probably less work to do it from the command line

 
That's all

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