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PHP中的''、零、null 相等？

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2016-06-13 11:01:34755browse

PHP中的''、0、null 相等？！
猜猜以下代码输出结果，初学php语言，跟java比，输出结果让我有点吃惊

//$str1,$str2='';//语法有错误$str1=null;$str2='';if($str1==0)	echo "相等";else	echo "不等";	echo '<br>','<br>','<br>';	if($str2==0)	echo "相等";else	echo "不等";

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