elseif
elseif, as its name suggests, is a combination
of if and else. Likeelse, it extends an if
statement to execute a different statement in case the originalif expression evaluates to
FALSE
. However, unlikeelse, it will execute that alternative
expression only if the elseif conditional
expression evaluates to
TRUE
. For example, the
following code would display a is bigger than
b, a equal to b
or a is smaller than b:
<?php
if ($a > $b) {
echo "a is bigger than b";
} elseif ($a == $b) {
echo "a is equal to b";
} else {
echo "a is smaller than b";
}
?>
There may be several elseifs within the sameif statement. The firstelseif expression (if any) that evaluates to TRUE would be executed. In PHP, you can also write 'else if' (in two words) and the behavior would be identical to the one of 'elseif' (in a single word). The syntactic meaning is slightly different (if you're familiar with C, this is the same behavior) but the bottom line is that both would result in exactly the same behavior.
The elseif statement is only executed if the preceding if expression and any precedingelseif expressions evaluated to FALSE , and the currentelseif expression evaluated to TRUE .
