[+] Email test@example.com is valid
[+] Email test.derp@example.com is valid
[+] Email test+nick@example.com is valid
[+] Email abc."defghi".xyz@example.com is valid
[+] Email "abcdefghixyz"@example.com is valid
[+] Email jsmith@[192.168.2.1] is valid
[+] Email jsmith@[IPv6:2001:db8::1] is valid
[+] Email long.but.still.perfectly.valid.email.address@on.even.longer.domain.name.owned.by.some.weird.name.company.which.name.you.cannot.pronounce.com is valid
[+] Email other.email-with-dash@example.com is valid
[-] Email "much.more unusual"@example.com is NOT valid
[+] Email "very.unusual.@.unusual.com"@example.com is valid
[+] Email "very.(),:;<>[]\".VERY.\"very@\ \"very\".unusual"@strange.example.com is valid
[-] Email admin@mailserver1 (local domain name with no TLD) is NOT valid
[+] Email #!$%&'*+-/=?^_`{}|~@example.org is valid
[-] Email "()<>[]:,;@\\"!#$%&'*+-/=?^_`{}| ~.a"@example.org is NOT valid
[-] Email " "@example.org (space between the quotes) is NOT valid
[-] Email ☃☃☃@example.com (Unicode characters in local part) is NOT valid
[-] Email ☃☃☃@☃☃☃.com (Unicode characters in domain part) is NOT valid
[+] Email new@domain.pizza is valid
Output for 5.2.1 - 5.2.13, 5.3.0 - 5.3.2
[+] Email test@example.com is valid
[+] Email test.derp@example.com is valid
[+] Email test+nick@example.com is valid
[-] Email abc."defghi".xyz@example.com is NOT valid
[+] Email "abcdefghixyz"@example.com is valid
[+] Email jsmith@[192.168.2.1] is valid
[-] Email jsmith@[IPv6:2001:db8::1] is NOT valid
[+] Email long.but.still.perfectly.valid.email.address@on.even.longer.domain.name.owned.by.some.weird.name.company.which.name.you.cannot.pronounce.com is valid
[+] Email other.email-with-dash@example.com is valid
[+] Email "much.more unusual"@example.com is valid
[+] Email "very.unusual.@.unusual.com"@example.com is valid
[-] Email "very.(),:;<>[]\".VERY.\"very@\ \"very\".unusual"@strange.example.com is NOT valid
[-] Email admin@mailserver1 (local domain name with no TLD) is NOT valid
[-] Email #!$%&'*+-/=?^_`{}|~@example.org is NOT valid
[-] Email "()<>[]:,;@\\"!#$%&'*+-/=?^_`{}| ~.a"@example.org is NOT valid
[-] Email " "@example.org (space between the quotes) is NOT valid
[-] Email ☃☃☃@example.com (Unicode characters in local part) is NOT valid
[-] Email ☃☃☃@☃☃☃.com (Unicode characters in domain part) is NOT valid
[+] Email new@domain.pizza is valid
Output for 5.2.0
[+] Email test@example.com is valid
[+] Email test.derp@example.com is valid
[+] Email test+nick@example.com is valid
[-] Email abc."defghi".xyz@example.com is NOT valid
[+] Email "abcdefghixyz"@example.com is valid
[+] Email jsmith@[192.168.2.1] is valid
[-] Email jsmith@[IPv6:2001:db8::1] is NOT valid
[+] Email long.but.still.perfectly.valid.email.address@on.even.longer.domain.name.owned.by.some.weird.name.company.which.name.you.cannot.pronounce.com is valid
[+] Email other.email-with-dash@example.com is valid
[+] Email "much.more unusual"@example.com is valid
[-] Email "very.unusual.@.unusual.com"@example.com is NOT valid
[-] Email "very.(),:;<>[]\".VERY.\"very@\ \"very\".unusual"@strange.example.com is NOT valid
[-] Email admin@mailserver1 (local domain name with no TLD) is NOT valid
[-] Email #!$%&'*+-/=?^_`{}|~@example.org is NOT valid
[-] Email "()<>[]:,;@\\"!#$%&'*+-/=?^_`{}| ~.a"@example.org is NOT valid
[-] Email " "@example.org (space between the quotes) is NOT valid
[-] Email ☃☃☃@example.com (Unicode characters in local part) is NOT valid
[-] Email ☃☃☃@☃☃☃.com (Unicode characters in domain part) is NOT valid
[+] Email new@domain.pizza is valid
Output for 5.0.0 - 5.0.5, 5.1.0 - 5.1.6
Fatal error: Call to undefined function filter_var() in /in/qTsVc on line 26
Process exited with code 255.
Output for 4.4.5 - 4.4.9
Fatal error: Call to undefined function: filter_var() in /in/qTsVc on line 26
Process exited with code 255.
Output for 4.3.2 - 4.3.11, 4.4.0 - 4.4.4
Fatal error: Call to undefined function: filter_var() in /in/qTsVc on line 26
Process exited with code 255.
Output for 4.3.0 - 4.3.1
Fatal error: Call to undefined function: filter_var() in /in/qTsVc on line 26