Php regex redirect

Question

I need help with a regex redirect.

I have a working regex

'^page\.php\?t=(\d+)$' => 'page/t-$1/'

to redirect

/page.php?t=123 > /page/t-123/

I need regex to redirect

/page.php?t=123/dynamic-text-123/ > /page/t-123/dynamic-text-123/

This worked, Thank you '^page\.php\?t=(.*)$' => 'page/t-$1/' — Arsh Dhillon
– Arsh Dhillon, Commented Mar 4, 2018 at 9:53

mickmackusa · Accepted Answer · 2018-03-04 20:26:35Z

1

You effectively only need to remove the .php?t= portion.

Since it seems that you are comfortable hardcoding the leading page component, you only need to match the trailing t value with a lazy wildcard (.*?) and exclude the optional trailing / then append that captured value to page/t-, then apend a slash at the end like so:

 '^page\.php\?t=(.*?)/?$' => 'page/t-$1/'

I am making the trailing / match optional, since it is not always there yet it seems you want the / in the replacement no matter what.

edited Mar 4, 2018 at 20:26

answered Mar 4, 2018 at 10:45

mickmackusa♦

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4 Comments

The fourth bird Over a year ago

I have a question just for my understanding. Why make the ending forward slash optional /? when the greedy .* already matches it?

mickmackusa Over a year ago

Because in the first sample input there is no / at the end, but in the second sample input, it is present at the end. The desired replacement always wants the / at the end, so I am hardcoding it into the replacement and omitting it from the capture group.

The fourth bird Over a year ago

Wouldn't the optional / at the end be in the captured group with the greedy .*?

mickmackusa Over a year ago

My mistake, I should have tested.

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