close

 

<?php
//define a constant
define("GREETING","Hello you! How are you today?");

echo constant("GREETING");
?>

輸出：
Hello you! How are you today?

 

<?php
define("MAXSIZE", 100);

echo MAXSIZE;
echo "<br>";
echo constant("MAXSIZE"); // same thing as the previous line
?>

輸出：
100
100

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