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How can I use the same variable declared for different functions in PHP?

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#2 Using $GLOBALS instead of global The $GLOBALS array is an associative array with the name of the global variable being the key and the contents of that variable being the value of the array element. Notice how $GLOBALS exists in any scope, this is because $GLOBALS is a superglobal. Here's an...
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#2 Using $GLOBALS instead of global The $GLOBALS array is an associative array with the name of the global variable being the key and the contents of that variable being the value of the array element. Notice how $GLOBALS exists in any scope, this is because $GLOBALS is a superglobal. Here's an example demonstrating the power of superglobals: read less
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Hello Vishal, PHP supports the concept of variable functions. This means that if a variable name has parentheses appended to it, PHP will look for a function with the same name as whatever the variable evaluates to, and will attempt to execute it. Among other things, this can be used to implement callbacks,...
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Hello Vishal, PHP supports the concept of variable functions. This means that if a variable name has parentheses appended to it, PHP will look for a function with the same name as whatever the variable evaluates to, and will attempt to execute it. Among other things, this can be used to implement callbacks, function tables, and so forth. Variable functions won't work with language constructs such as echo, print, unset(), isset(), empty(), include, require and the like. Utilize wrapper functions to make use of any of these constructs as variable functions. read less
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/* ***** If you wanna understand usage of global variables ***** */ function test1() { global $var; /* declare as global variable */ $var = "value"; } function test2() { global $var; /* declare as global variable */ echo $var; /* used here */ } /* ***** If you wanna understand...
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/* ***** If you wanna understand usage of global variables ***** */ function test1() { global $var; /* declare as global variable */ $var = "value"; } function test2() { global $var; /* declare as global variable */ echo $var; /* used here */ } /* ***** If you wanna understand usage of static variables ***** */ class testClass { private static $a = 1; public static function a() { self::$a = 2; } public static function b() { echo self::$a; } } You can then call the functions: testClass::a(); testClass::b(); read less
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