We need to get a list of specific files from a directory.

Say we need to find all *.php files in our c:\inetpub\wwwroot folder. There are a couple of options to do it in PHP: opendir(), glob(), scandir() and RecursiveDirectoryIterator class. If we need to search through subfolders then the simplest solution in my opinion is to use the RecursiveDirectoryIterator class. Continue reading →

We need to iterate date and time between two predefined time moments with a predefined time step.

For example 30 minutes step

$start = new \DateTime(...);
$end = new \DateTime(...);
for ($temp=$start; $temp<=$end; $temp->add(new \DateInterval('PT30M')))
{..}

1 day step

for ($temp=$start; $temp<=$end; $temp->add(new \DateInterval('P1D')))
{..}

Method overloading is a partial case of polimorphism. With method overloading we can define different methods with the same name, and these methods can vary on type and a number of arguments. This is especially useful for class constructors. But PHP is a weak-type language and it does not allow several constructors in a class. How we can use method overloading in PHP even it is not a strong-type language?
Continue reading →