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><TT
CLASS="literal"
>elseif</TT
></A
></H1
><P
> <TT
CLASS="literal"
>elseif</TT
>, as its name suggests, is a combination
of <TT
CLASS="literal"
>if</TT
> and <TT
CLASS="literal"
>else</TT
>. Like
<TT
CLASS="literal"
>else</TT
>, it extends an <TT
CLASS="literal"
>if</TT
>
statement to execute a different statement in case the original
<TT
CLASS="literal"
>if</TT
> expression evaluates to
<TT
CLASS="literal"
>FALSE</TT
>. However, unlike
<TT
CLASS="literal"
>else</TT
>, it will execute that alternative
expression only if the <TT
CLASS="literal"
>elseif</TT
> conditional
expression evaluates to <TT
CLASS="literal"
>TRUE</TT
>. For example, the
following code would display <TT
CLASS="computeroutput"
>a is bigger than
b</TT
>, <TT
CLASS="computeroutput"
>a equal to b</TT
>
or <TT
CLASS="computeroutput"
>a is smaller than b</TT
>:
<DIV
CLASS="informalexample"
><P
></P
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><TD
><PRE
CLASS="programlisting"
> 1
2 if ($a > $b) {
3 print "a is bigger than b";
4 } elseif ($a == $b) {
5 print "a is equal to b";
6 } else {
7 print "a is smaller than b";
8 }
9 </PRE
></TD
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><P
></P
></DIV
>
</P
><P
> There may be several <TT
CLASS="literal"
>elseif</TT
>s within the same
<TT
CLASS="literal"
>if</TT
> statement. The first
<TT
CLASS="literal"
>elseif</TT
> expression (if any) that evaluates to
<TT
CLASS="literal"
>true</TT
> 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.
</P
><P
> The <TT
CLASS="literal"
>elseif</TT
> statement is only executed if the
preceding <TT
CLASS="literal"
>if</TT
> expression and any preceding
<TT
CLASS="literal"
>elseif</TT
> expressions evaluated to
<TT
CLASS="literal"
>FALSE</TT
>, and the current
<TT
CLASS="literal"
>elseif</TT
> expression evaluated to
<TT
CLASS="literal"
>TRUE</TT
>.
</P
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