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run code in 150+ php & hhvm versions
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<?php $url = 'http://www.google.com'; if (filter_var("http://" . $url, FILTER_VALIDATE_URL)) $filter="true"; else $filter="false"; echo "Filter var result of concat with http is:" . $filter;
Output for 5.2.0 - 5.6.21, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0
Filter var result of concat with http is:true
Output for 5.0.0 - 5.1.6
Fatal error: Call to undefined function filter_var() in /in/Z2WZu on line 5
Process exited with code 255.
Output for 4.4.5 - 4.4.9
Fatal error: Call to undefined function: filter_var() in /in/Z2WZu on line 5
Process exited with code 255.
Output for 4.3.2 - 4.4.4
Fatal error: Call to undefined function: filter_var() in /in/Z2WZu on line 5
Process exited with code 255.
Output for 4.3.0 - 4.3.1
Fatal error: Call to undefined function: filter_var() in /in/Z2WZu on line 5