Code for validating email in php

10-Feb-2018 21:03 by 9 Comments

Code for validating email in php

Safari 5 and Google Chrome 6-8 will not accept invalid email address input but, unlike the other browsers, will not help the user correct the error.

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HP 5.3.3 and 5.2.14 had a bug ( related to FILTER_VALIDATE_EMAIL, which resulted in segfault when validating large values.Mistyping an email address in that form, of course, and then have your browser remember that incorrect address for all the signup forms to come.If you want to validate email addresses entered into your form but avoid complicated tinkering and scripts, HTML5 lets you rely on the browser — without effort, and without turning to Java Script.If you want to learn more about email addresses I suggest you to start reading the specs, but I have to warn you it is not an easy read by any stretch: P. A note on the regex pattern used above (from the PHP source).It looks like there is some copyright on it of Michael Rushton.Email addresses: easy to create, difficult to type. Note that FILTER_VALIDATE_EMAIL will validate email addresses that contain domains and top-level domains that do not exist.

Fortunately, PHP (5 and later) comes with a handy set of functions and filters that make testing for email address validity a snap.As stated: "Feel free to use and redistribute this code.But please keep this copyright notice." solutions have false negatives (especially with all of the newer TLDs).Also, you must remember that email address standard was and can evolute, so you can't just type some "standard-valid" regexp once and for all times.And you must remember that some concrete internet servers can fail some details of common standard and in fact work with own "modified standard". Because it has attracted low-quality or spam answers that had to be removed, posting an answer now requires 10 reputation on this site (the association bonus does not count). Getting email addresses you collect — for a newsletter, say, or for password retrieval — to at least conform to standards (if not ensure ) is crucial, of course, and extremely tricky.