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<?php $domain_name = "президент.рф"; $domain_name = idn_to_ascii($domain_name); function is_valid_domain_name($domain_name) { return (preg_match("/^([a-z\d](-*[a-z\d])*)(\.([a-z\d](-*[a-z\d])*))*$/i", $domain_name) //valid chars check && preg_match("/^.{1,253}$/", $domain_name) //overall length check && preg_match("/^[^\.]{1,63}(\.[^\.]{1,63})*$/", $domain_name) ); //length of each label } echo is_valid_domain_name($domain_name) ? "Domain is valid." : "Domain is not valid."; ?>
Output for 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.20, 7.4.0 - 7.4.32, 8.0.0 - 8.0.12, 8.0.14 - 8.0.30, 8.1.0 - 8.1.27, 8.2.0 - 8.2.17, 8.3.0 - 8.3.4
Domain is valid.
Output for 7.3.32 - 7.3.33, 7.4.33, 8.0.13
Fatal error: Uncaught Error: Call to undefined function idn_to_ascii() in /in/TSpve:4 Stack trace: #0 {main} thrown in /in/TSpve on line 4
Process exited with code 255.
Output for 7.2.5 - 7.2.33, 7.3.16 - 7.3.31
Deprecated: idn_to_ascii(): INTL_IDNA_VARIANT_2003 is deprecated in /in/TSpve on line 4 Domain is valid.
Output for 5.0.0 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29
Fatal error: Call to undefined function idn_to_ascii() in /in/TSpve on line 4
Process exited with code 255.
Output for 4.4.5 - 4.4.9
Fatal error: Call to undefined function: idn_to_ascii() in /in/TSpve on line 4
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: idn_to_ascii() in /in/TSpve on line 4
Process exited with code 255.
Output for 4.3.0 - 4.3.1
Fatal error: Call to undefined function: idn_to_ascii() in /in/TSpve on line 4

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