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What does the flag in php do?

藏色散人
Release: 2023-02-28 09:14:01
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What does the flag in php do?

#What can the flag in php do?

php code example:

header("location:aaaa.php?flag=1");
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where flag=1 is a URL parameter, a key-value pair, the key name is flag, the key value is 1, multiple pairs are allowed parameters, they are connected with ampersands, such as aaaa.php?flag1=1&flag2=2&flag3=3...

Then you can use $_GET["flag"] in aaaa.php to receive the value!

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