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PHP ConstantsConstants are like variables, except that once they are defined they cannot be changed or undefined. PHP Constants A constant is an identifier (name) for a simple value. The value cannot be changed during the script. A valid constant name starts with a letter or underscore (no $ sign before the constant name). Note: Unlike variables, constants are automatically global across the...0 التعليقات 0 المشاركات 2كيلو بايت مشاهدة 0 معاينة
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PHP echo and print StatementsWith PHP, there are two basic ways to get output: echo and print. In this tutorial we use echo or print in almost every example. So, this chapter contains a little more info about those two output statements. PHP echo and print Statements echo and print are more or less the same. They are both used to output data to the screen. The...0 التعليقات 0 المشاركات 3كيلو بايت مشاهدة 0 معاينة
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PHP SyntaxA PHP script is executed on the server, and the plain HTML result is sent back to the browser. Basic PHP Syntax A PHP script can be placed anywhere in the document. A PHP script starts with <?php and ends with ?>: <?php // PHP code goes here ?> The default file extension for PHP files is ".php". A PHP file normally contains HTML tags, and some PHP...0 التعليقات 0 المشاركات 3كيلو بايت مشاهدة 0 معاينة
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PHP Variables ScopePHP Variables Scope In PHP, variables can be declared anywhere in the script. The scope of a variable is the part of the script where the variable can be referenced/used. PHP has three different variable scopes: local global static Global and Local Scope A variable declared outside a function has a GLOBAL SCOPE and can only be accessed outside a function: ExampleGet...0 التعليقات 0 المشاركات 3كيلو بايت مشاهدة 0 معاينة