I want to detect if a string contains both numbers and letters.
For example:
PncC1KECj4pPVW
, it would be written to a text file because it contains both.qdEQ
, it would not, because it only contains letters.Is there a method to do this?
I was trying to use
$string = PREG_REPLACE("/[^0-9a-zA-Z]/i", '', $buffer);
But it didn't work.
Any help would be appreciated.
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Source: Stackoverflow.com