Strings in PHP

After integer.. maybe just after integer, strings are possibly the most important variable types in programming. Storing a bunch (series) of character as one variable. PHP give you alot of functions to manipulate and handle strings. (more…)

Php provides isset, unset and empty that can help you when you use variables in php programming and coding. These variables will give you the status of a variable, if it is in use, created, or when you want to get rid of the variable.
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As we showed you before, variables in PHP do not have to be defined as in some other programming languages. How are they are some instances where you want to force a variable into a particular type as oppose to having PHP assigned the data type for you. This is called variable casting. The following in an example of casting in PHP,
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In some cases, you will need to define global variables or constants who values will not change during the execution of the php code. Php provides you will the ability to define constants using the Define Keyword. The CONSTANTS are defined a differently to normal variables. They start with the DEFINE keyword and do not contain a “$”.
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