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<?php $characters = ["A", "a", 0x41, "Φ", "φ", "1"]; foreach ($characters as $character) { var_dump(IntlChar::tolower($character)); } ?>
based on ehjAm
Output for 7.0.0 - 7.0.4, 7.0.6 - 7.2.0
string(1) "a" string(1) "a" int(97) string(2) "φ" string(2) "φ" string(1) "1"
Output for 7.0.5
Fatal error: Uncaught Error: Class 'IntlChar' not found in /in/34DMm:4 Stack trace: #0 {main} thrown in /in/34DMm on line 4
Process exited with code 255.
Output for 5.4.2 - 5.6.28
Fatal error: Class 'IntlChar' not found in /in/34DMm on line 4
Process exited with code 255.
Output for 5.3.17 - 5.3.29
Parse error: syntax error, unexpected '[' in /in/34DMm on line 2
Process exited with code 255.