<?php define("CONSTANT", "Hello world."); echo CONSTANT; // outputs "Hello world." echo Constant; // outputs "Constant" and issues a notice. echo PHP_EOL; define("GREETING", "Hello you.", true); echo GREETING; // outputs "Hello you." echo Greeting; // outputs "Hello you." echo PHP_EOL; // Works as of PHP 7 define('ANIMALS', array( 'dog', 'cat', 'bird' )); echo PHP_EOL; echo ANIMALS[1]; // outputs "cat"
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