在PHP中，正常情况下elseif和else if的用法及效果是一样的，但在使用带冒号的if语句时（也就是php替代）情况会有点不一样，比如：
<?php
/*正确的写法*/
$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;
==================
/*错误的写法，解析器会报错*/
$a = 1;
$b = 2;
if ($a > $b):
echo ‘a is larger than b‘;
else if ($a < $b):
echo ‘a is smaller than b‘;
else:
echo ‘a is equals b‘;
endif;
?>
php替代实例
<?php
if ($a == 5):
echo "a equals 5";
echo "...";
elseif ($a == 6):
echo "a equals 6";
echo "!!!";
else:
echo "a is neither 5 nor 6";
endif;
?>
本文出自 “Linux狱长” 博客，请务必保留此出处http://sswqzx.blog.51cto.com/2494644/1962241
PHP中elseif与else if的区别
原文地址：http://sswqzx.blog.51cto.com/2494644/1962241