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php字符串比较:"" == "" 返回false

WBOY
WBOYOriginal
2016-06-06 20:24:351402browse

判断"" == ""居然返回false,前一个双引号是从数据库取出处理数据时得到到,后一个双引号是用编辑器敲出来的,比较的结果是false,是编码的问题还是隐藏字符的问题呢?有什么比较好的检测方法吗?

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判断"" == ""居然返回false,前一个双引号是从数据库取出处理数据时得到到,后一个双引号是用编辑器敲出来的,比较的结果是false,是编码的问题还是隐藏字符的问题呢?有什么比较好的检测方法吗?

"" 中间有一个字符,用json_encode输出后是\ufeff

编码问题。

<code><?php if( "" == ""){
    echo "1";
}else{
    echo "0";//这里真的输出0了,我也很奇怪
}
var_dump("");//复制第一个“”,发现时编码问题
</code></code>

php字符串比较:

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