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@ 2017-08-18T08:17:36Z

<?php

class Foo extends \IntlCalendar
{
    
}

$fooReflection = new \ReflectionClass(\Foo::class);
$intlGregorianCalendarReflection = new \ReflectionClass(\IntlGregorianCalendar::class);

printf("%d constants in %s, ", count($fooReflection->getConstants()), \Foo::class);
if ($fooReflection->getParentClass()) {
    printf("%s extends %s\n", Foo::class, $fooReflection->getParentClass()->getName());
}
printf("%d constants in %s, ", count($intlGregorianCalendarReflection->getConstants()), \IntlGregorianCalendar::class);
if ($intlGregorianCalendarReflection->getParentClass()) {
    printf("%s extends %s\n", \IntlGregorianCalendar::class, $intlGregorianCalendarReflection->getParentClass()->getName());
}
printf("%d constants in %s\n", count((new \ReflectionClass(\IntlCalendar::class))->getConstants()), \IntlCalendar::class);

Output for 7.1.20 - 7.1.25, 7.2.0 - 7.2.33, 7.3.0 - 7.3.31, 7.4.0 - 7.4.32, 8.0.0 - 8.0.12, 8.0.14 - 8.0.30, 8.1.0 - 8.1.33, 8.2.0 - 8.2.29, 8.3.0 - 8.3.26, 8.4.1 - 8.4.13: 39 constants in Foo, Foo extends IntlCalendar 39 constants in IntlGregorianCalendar, IntlGregorianCalendar extends IntlCalendar 39 constants in IntlCalendar
Output for 8.0.13: Fatal error: Uncaught Error: Class "IntlCalendar" not found in /in/N8Ets:3 Stack trace: #0 {main} thrown in /in/N8Ets on line 3
Process exited with code 255.
Output for 7.3.32 - 7.3.33, 7.4.33: Fatal error: Uncaught Error: Class 'IntlCalendar' not found in /in/N8Ets:3 Stack trace: #0 {main} thrown in /in/N8Ets on line 3
Process exited with code 255.
Output for 7.0.0 - 7.0.20, 7.1.0 - 7.1.8: 39 constants in Foo, Foo extends IntlCalendar 0 constants in IntlGregorianCalendar, IntlGregorianCalendar extends IntlCalendar 39 constants in IntlCalendar

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