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Merge pull request #96 from paierlep/master
added a few sentences about constants
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@ -9,7 +9,7 @@ filename: learnphp.php
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This document describes PHP 5+.
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```php
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<?php // PHP code must be enclosed with <?php ? > tags
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<?php // PHP code must be enclosed with <?php ?> tags
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// If your php file only contains PHP code, it is best practise
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// to omit the php closing tag.
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@ -100,6 +100,21 @@ END;
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echo 'This string ' . 'is concatenated';
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/********************************
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* Constants
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*/
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// A constant is defined by using define()
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// and can never be changed during runtime!
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// a valid constant name starts with a letter or underscore,
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// followed by any number of letters, numbers, or underscores.
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define("FOO", "something");
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// access to a constant is possible by direct using the choosen name
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echo 'This outputs '.FOO;
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/********************************
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* Arrays
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*/
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