The difference between ElseIf and else if in PHP

In PHP, the ElseIf and else if are normally used in the same way and the effect is the same, but when using a colon if statement (that is, PHP substitution) The situation will be a little different, such as:

<?php
/* Correct wording */
$a = 1;
$b = 2;
if ($a > $b):
Echo ' A is larger than B ';
ElseIf ($a < $b):
Echo ' A is smaller than B ';
Else
Echo ' A is equals B ';
endif

==================

/* Wrong wording, the parser will error */
$a = 1;
$b = 2;
if ($a > $b):
Echo ' A is larger than B ';
else if ($a < $b):
Echo ' A is smaller than B ';
Else
Echo ' A is equals B ';
endif
?>

PHP Alternative Instances

<?php
if ($a = = 5):
echo "a equals 5";
echo "...";
ElseIf ($a = = 6):
echo "a equals 6";
echo "!!!";
Else
echo "A is neither 5 nor 6";
endif
?>

This article is from the "Linux Warden" blog, so be sure to keep this source http://sswqzx.blog.51cto.com/2494644/1962241

The difference between ElseIf and else if in PHP