DEV Community

Discussion on: Share your favourite PHP trick!

Collapse
aschwin profile image
Aschwin Wesselius

Well, even though it's not really about PHP, it's still a nice trick. Let's A/B test some code!

<?php

/*/
$a = 1 + 1;
/*/
$a = 2 + 2;
/**/
echo $a . "\n";

This will print case no. 2.

If you put another asterisk (*) in the first little comment block, see what happens!

<?php

/**/
$a = 1 + 1;
/*/
$a = 2 + 2;
/**/
echo $a . "\n";

Suddenly, this will print case no. 1!

By just putting/removing one asterisk it will toggle both cases.

I bet this will work in multiple languages. However, I didn't test it anywhere but PHP.

Collapse
bertheyman profile image
Bert Heyman Author

A little known trick that's really nice when testing out some code. Just gave it a go and worked like a charm - thanks!