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e PHP language. Programmers can choose names to suit the purpose of any constants that their scripts use, then use these names for subsequent access to the constant values. Accessing Constants PHP scripts can access constants at any point after definition, by referring to the constant variable name. The following sample code demonstrates outputting the value of a defined constant to a us ers browser:echo ID_NUMBER;This code will write the value of the constant. Constants have global scope, which means that their val douglas coupland free ebooks download ues are accessible at any point within a script. Constant Function The constant function allows programmers to retrieve the value of a constant. The function takes a string parameter representing the constant name, as in the following example code:echo constan Bio Limousin Moteur de recherche tID_NUMBER;This code writes the value of the constant defined with the specified name. If the programmer is attempting to access a .

using the function:definedID_NUMBER;This function returns a Boolean value, true if the constant has already been defined, false if it has not been. This function can be useful in PHP scripts with complex flows of execution in which constants may be defined at different points. Constant Types As well as standard user defined constants, PHP uses a number of other constant types. Class cons tants can define values to be shared across a class. Predefined constants have values specified within the PHP core, relating to s free editable html web templates erver and PHP processing administration. Magic constants are also defined by PHP itself, but their values depend on the place a sc ript happens to execute, reflecting data items such as line numbers, file names and directories.1 Open your Terminal by clicking t Bio Limousin Moteur de recherche he desktop icon, or if you are using a remote computer, log in via the secure shell SSH. Check your host for the SSH login details .

e. Click the Start button and choose the Computer option in the menu. 2 Double-click on the icon for your DVD drive to display the files and folders stored on the disc. 3 Right-click on the DVD-Video or Video_TS folder and select Delete. The drive will delete the DVD Video folder from the disc.1 Plug the external hard drive into the computer with the supplied Universal Serial Bus cable. Click Start on the desktop taskbar and select Computer from the Start menu. 2 Write down the computer drive letter of the external free job well done certificate template hard drive. On most computers this is usually the F: drive. 3 Click Start on the desktop taskbar, then type Run into the search b ox at the bottom of the Start menu. 4 Click Run from the Programs section of the search results. 5 Type cmd into the Open input fi Bio Limousin Moteur de recherche eld. Click OK. This opens the DOS command prompt window. 6 Type format FS:FAT32 X: into the command prompt window. Replace X with .


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