Question

我有这个网址“ https://www.example.com/thymus_vulgaris?tag=Oil&page=2” 我从php中的 $ _ SERVER ['REQUEST_URI'] 那里获得 / thymus_vulgaris？tag = Oil＆page = 2 而且我还将与变量相同的URL保存在数据库中 $ abc = / thymus_vulgaris？tag = Oil＆page = 2 您可以看到两个URL URI相同我正在编写此代码。但无法进行比较，请查看屏幕截图值以更好地了解

foreach ($redirects as $redirectlink) { 
                        if('/thymus_vulgaris?tag=Oil&page=2' == $redirectlink['title']){
                                die;
                            }
                        }

如果我执行print_r（$ redirects），则得到此数组结果，请参见下文

Array

（

[0] => Array
    (
        [title] => /thymus_vulgaris?tag=Oil&page=2
        [url] => essential-oils
    )

[1] => Array
    (
        [title] => /products/diffusers
        [url] => diffusers
    )

[2] => Array
    (
        [title] => /essential-oils/Essential-Oil-Kits/sleep_and_breathe
        [url] => essential-oils
    )

[3] => Array
    (
        [title] => /Solum%20Lux%20Telum
        [url] => essential-oils
    )

[4] => Array
    (
        [title] => /organic-boswellia-serrata
        [url] => essential-oils
    )

[5] => Array
    (
        [title] => /faqs
        [url] => FAQ
    )

[6] => Array
    (
        [title] => /clearance/refurbished-replacement-bottles/amp
        [url] => accessories/bottles-and-caps/amp
    )

[7] => Array
    (
        [title] => /refurbished-replacement-bottles/amp
        [url] => accessories/bottles-and-caps/amp
    )

）

如果看到第一个数组值与请求$ _SERVER ['REQUEST_URI']值相同。有人可以快速帮助我吗？

Answer 1

我猜可能是一些不可见的字符，因为==产生了false，

例如：DEMO

$ php -r '$f1="foo"; $f2="foo\0"; echo $f1.PHP_EOL; echo $f2.PHP_EOL; var_dump($f1); var_dump($f2); var_dump($f1==$f2);'
foo
foo
string(3) "foo"
string(4) "foo"
bool(false)

从上面可以看到，$f1和$f2并不相等，但是看起来一样。

输出：

URL字符串比较在PHP中不起作用

1 个答案: