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run code in 200+ php & hhvm versions
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<?php $name = test_input($_POST["name"]); if (!preg_match("/^[a-zA-Z ]*$/",$name)) { $nameErr = "Only letters and white space allowed"; }
Output for 7.0.0 - 7.2.8
Fatal error: Uncaught Error: Call to undefined function test_input() in /in/7FmPE:2 Stack trace: #0 {main} thrown in /in/7FmPE on line 2
Process exited with code 255.
Output for 5.0.0 - 5.6.28
Fatal error: Call to undefined function test_input() in /in/7FmPE on line 2
Process exited with code 255.
Output for 4.4.5 - 4.4.9
Fatal error: Call to undefined function: test_input() in /in/7FmPE on line 2
Process exited with code 255.
Output for 4.3.2 - 4.4.4
Fatal error: Call to undefined function: test_input() in /in/7FmPE on line 2
Process exited with code 255.
Output for 4.3.0 - 4.3.1
Fatal error: Call to undefined function: test_input() in /in/7FmPE on line 2