I’ve got a table of URLs and I don’t want any duplicate URLs. How do I check to see if a given URL is already in the table using PHP/MySQL?
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I’ve got a table of URLs and I don’t want any duplicate URLs. How do I check to see if a given URL is already in the table using PHP/MySQL?
If you don’t want to have duplicates you can do following:
If multiple users can insert data to DB, method suggested by @Jeremy Ruten, can lead to an error: after you performed a check someone can insert similar data to the table.