Definition and Usage. The array() function is used to create an array. In PHP, there are three types of arrays: Indexed arrays - Arrays with numeric index. Associative arrays - Arrays with named keys. Multidimensional arrays - Arrays containing one or more arrays.
Liters and milligrams aren't compatible (liters measure volume and milligrams measure mass). One liter of water is equal to 1,000,000 milligrams, and there are 1000 milliliters in one liter. ChaCha again soon! data-config-site-section=chacha>.
What is the difference between milligrams (mg) and millilitres (mL)? Milligrams (mg) measure weight, and Millilitres (ml) measure volume of liquid. The part of the word 'Milli' comes from the latin mille, which means one thousand. There are 1,000 milligrams in a gram, and 1,000 millilitres in a litre of liquid. Often people will tell you how much medicine they have taken in Millilitres, but the amount of liquid doesn't tell you anything much, unless you know how much the drug dissolved in the liquid weighed...