The difference between ElseIf else if

It is recommended to use else if.

in PHP

(PHP 4, PHP 5)

ElseIf, as implied by this name, is the combination of if and else . As with else , it extends the if statement and can execute different statements when the original if expression FALSE value is. But unlike else , it only executes the statement when the ElseIf 's conditional expression value is TRUE .

It's important to note thatElseIfwith theelse ifIt is considered identical only if curly braces are used in a similar case. If you use a colon to defineif/ElseIfcondition, then you can't use two words.else if, or PHP will generate parsing errors

<?php

/* Incorrect method of use: */
if ($a>$b):
Echo$a."is greater than".$b;
else if ($a== $b): //will not compile
Echo"The above line causes a parse error.";
endif


/* Correct way to use: */
if ($a>$b):
Echo$a."is greater than".$b;
ElseIf ($a== $b): //Note the use of a word ElseIf
Echo$a."equals".$b;
Else
Echo$a."is neither greater than or equal to".$b;
endif

?>

The difference between ElseIf else if