note 31566 added to language.variables.scope

This may seem clear so some, but may be worth mentioning to others: The scope of a function differs from the scope of global variables: Globally defined functions can be accesses from within other functions without having to be (re)defined using the "global" keyword! <? // Scope of a function: // This shows that the scope of a globally declared function // is different from the scope of a global variable. function MyFunction() { return "MyFunction says Hello!"; } $myGlobVar = "The global myGlobVar."; class A { function A() { // myGlobVar has a local scope if not declared global: $myGlobVar = "myGlobVar in a local scope"; echo "<tr><td>myGlobVar: &quot;".$myGlobVar."&quot;</td></tr>"; // The global myGlobVar is only known if speciallly declared global: global $myGlobVar; echo "<tr><td>myGlobVar: &quot;".$myGlobVar."&quot;</td></tr>"; // MyFunction() is known without having to be declared global: $this->a=MyFunction(); echo "<tr><td>this->a: &quot;".$this->a."&quot;</td></tr>"; echo "</table>"; } } echo "<html><head> <title>Scopes of Variables and Functions</title> </head><body><table>"; $myA=new A; echo "</table></body></html>"; ?> -- http://www.php.net/manual/en/language.variables.scope.php http://master.php.net/manage/user-notes.php?action=edit+31566 http://master.php.net/manage/user-notes.php?action=delete+31566 http://master.php.net/manage/user-notes.php?action=reject+31566