Comparing E-mail Address Validating Regular Expressions. Updated: 2/3/2012 Summary This page compares regular expressions that validate e-mail addresses in order to find the best one. The expression with the best score is currently the one used by PHP's filter_var(), which is based on a regex by Michael Rushton: The best one that's been verified to work in JavaScript is Arluison Guillaume's improvement of Warren Gaebel's regex: Introduction I was writing a web application and wanted to find a regular expression to validate user's e-mail addresses, but when I searched for one I found dozens of slightly different variations of the same expression. It's been about 5 years since I initially created this, and I think we've found a relatively solid answer, but if you know of an expression that tests better than the current one, or if you have some other feedback feel free to contact me.
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