How to use a regular check password that can only have numbers or letters or numbers plus letters?

password requires
1, number
2, letter
3, number + letter


I'll have one.
if you don't check the number of digits,
/ [0-9a-zA-Z] + /


clipboard.png
happens to be useful in the project. Share one here.


give a Portal check

MySQL Query : SELECT * FROM `codeshelper`.`v9_news` WHERE status=99 AND catid='6' ORDER BY rand() LIMIT 5
MySQL Error : Disk full (/tmp/#sql-temptable-64f5-1b319ef-2b110.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
MySQL Errno : 1021
Message : Disk full (/tmp/#sql-temptable-64f5-1b319ef-2b110.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
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