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Chapter 7. TypesIntroductionPHP supports eight primitive types. Four scalar types: Two compound types: And finally two special types: This manual also introduces some pseudo-types for readability reasons: You may also find some references to the type "double". Consider double the same as float, the two names exist only for historic reasons.The type of a variable is usually not set by the programmer; rather, it is decided at runtime by PHP depending on the context in which that variable is used.
If you would like to force a variable to be converted to a certain type, you may either cast the variable or use the settype() function on it. Note that a variable may be evaluated with different values in certain situations, depending on what type it is at the time. For more information, see the section on Type Juggling. |