PHP中的头函数运行顺序

Question

<?php
header("Location:http://www.example.com");
header("Location:http://example.net");
?>

when I run this code, it is being redirected to example.net

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why is it being redirected to example.net whereas example.com comes before example.net?

Answer 1

That's because your second header replaces the first, because you are not using the optional replace parameter to header. From the manual:

replace

The optional replace parameter indicates whether the header should replace a previous similar header, or add a second header of the same type. By default it will replace, but if you pass in FALSE as the second argument you can force multiple headers of the same type