Changes

== The PHP Boolean Variable Type ==

PHP boolean type variables hold a value of ''true'' or ''false'' and are used to test conditions such as whether some part of a script was performed correctly. We will look at using boolean values in greater detail when we look at [[PHP Flow Control and Looping]], with particular regard to the ''if'' statement. It is useful to know that the ''true'' and ''false'' values are actually represented internally by PHP boolean values 1 and 0 respectively, though it is important to be aware that boolean 1 and 0 are not the same as integer values 1 and 0.