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Var}[1], on the other hand, tells PHP to apply the index to the outer level. Initially, dynamic variables may not seem that useful, but there are times when they can shorten the amount of code you need to write to perform certain tasks. For example, say you have an associative array that looks like: $array["abc"] = "Hello"; $array["def"] = "World";Associative arrays like this are returned by various functions in the PHP modules. mysql_fetch_array() is one example. The indices in the array usually refer to fields or entity names within the context of the module you are working with.

These really aren't necessary. conf file. I would suggest simply deleting the ClearModuleList directive and deleting all your AddModule lines. The idea behind ClearModuleList/AddModule is to make it possible to reorder already loaded modules in case module order is an issue. With most modules, the order that they are loaded -- which governs the order they are called -- is not important. And further, most binary distributions of Apache ship with most modules compiled as dynamically loadable modules, which means that if order is an issue for some reason, you can simply change the order of the LoadModule calls to fix it.

If the expression evaluates to false, however, execution skips to the code immediately following the while loop. Note that you can omit the curly braces with the first form of the while statement if you only need to execute a single statement. It is possible to break out of a running loop at any time using the break keyword. This stops the current loop and, if control is within a nested set of loops, the next outer loop continues. It is also possible to break out of many levels of nested loops by passing a numerical argument to the break statement (break n) that specifies the number of nested loops it should break out of.

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Actions and Events by Paul Grice

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