I have this question that is leaving me with fleas behind the ear. I do not understand, not at all.
What does the sign for : have two points. Can anyone explain me?
Example:
if ( have_posts() ) : while ( have_posts() ) : the_post();
This is an alternate syntax for a block that is delimited by { } keys. In this case the opening becomes the two points : and the closing is a end followed by the name instruction that started can be a endif , endforeach etc. This syntax applies the if, while, for, foreach, and switch instructions.
$arr = range(1,5);
foreach ($arr as $item){
echo $item .'<br>';
}
The same code with the other syntax.
$arr = range(1,5);
foreach ($arr as $item):
echo $item .'<br>';
endforeach;
Complementing @rray's response. You'll also find the colon sign : as part of the ternary operator ?: used for conditions.
See an example:
$user = "gato";
echo ($user === "gato") ? "meow" : "nao eh um gato :(";
Output:
Meow