Generate a unique code.
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Parameters
$chars_length
Total number of characters (default 8)
$table
Data table name
$column_name
Data table column name
$is_number_only
If true, use numbers only. Otherwise use random characters (default false)
$formats
Use to format the unique code. For example, to insert a dash every 4 digits:
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$can_echo_query
If true the query will be echoed out (default false)
Return
string
The unique code
Example
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