The description is pretty clear.
Quote:
Joins an array of strings into one string, with a "join" string inserted in
between each given string. This function complements ExplodeString.
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So given
"," as the join string, the result will be
"Hello,there". You can then explode the string on
"," to get the original array.
You have to pick a join string that doesn't occur in your array values, so you shouldn't use this if your array contains for example player names, as you don't know what characters people might put in their name.
But as mentioned on Discord, you shouldn't put multiple values into one database column!
There is no performance gain to using one column. In fact you're adding unnecessary code by turning the array into a string and then turning it back into an array every time you want to display the values.
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