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[PHP] Help with Regular Expressions


Question

Can someone help me with PHP RegEx?

I'd like to be able to remove any characters that are not apart of this list:

ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz 0123456789;,.!&?@#$%^(){}[]-+/\=*'"

Here's what I'm using:

$Text = 'Testing  ? ? : $ ? ?` < > : 123';

$Text = preg_replace('/[^a-zA-Z0-9]+ ;,.!&?@\'\"\#\$\\\%\(\)\{\}\[\]\-\+;', '', $Text);

So, echoing $Text should only display the following:

Testing 123

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Hmm perhaps try ?

$Text = preg_replace('/([^\w \'\"\#\$\\\%\(\)\{\}\[\]\-\+]+)/', '', $Text);

I get the output

Testing $ 123

You mention you should get Testing 123.. but isnt the $ part of what you want to keep (as I have the $ kept in my final result)

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Hmm perhaps try ?

$Text = preg_replace('/([^\w \'\"\#\$\\\%\(\)\{\}\[\]\-\+]+)/', '', $Text);

I get the output

Testing $ 123

You mention you should get Testing 123.. but isnt the $ part of what you want to keep (as I have the $ kept in my final result)

out of his code

$Text = 'Testing  ? ? : $ ? ?` < > : 123';

he just wants to return "Testing 123" so symbols should be removed not kept =)

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out of his code

$Text = 'Testing  ? ? : $ ? ?` < > : 123';

he just wants to return "Testing 123" so symbols should be removed not kept =)

Yes but he also says...

I'd like to be able to remove any characters that are not apart of this list:

ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz 0123456789;,.!&?@#$%^(){}[]-+/\=*'"

As you can see $ is part of what he wants to keep.

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Yes but he also says...

As you can see $ is part of what he wants to keep.

Exactly, and according to my results, thats what should appear - based on his regular expression.

also I just noticed in my regular expression I didnt add every symbol you want to keep, example the @ symbol I forgot to put in my regular expression, but those can be re-added in to your liking.

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