Checking if a string is alphanumeric
I was looking for the best way to check if a string is alphanumeric and I found things along the lines of:
The second one seems much better to me :-/
Use ctype over preg_match where possible, yes.
I haven't found that function before... and I hate regex... and I usually cry when I have alphanumeric input fields.
You saved me many hours of crying.
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