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Email Template - Split Custom Field into Array


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Hi there!

I'm trying to split a string from a custom field I've added to the order form, namely: {$service_custom_fields.0}

User's enter keywords within this custom field and seperate them by a comma. 

How can I split this string by comma? 

I found the following answer; however, this was written in 2017 so I'm not sure if this still works (I've edited the values to match my question):  

{assign "service_custom_fields.0" ","|explode:$keywords}

Will this still work? 


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