PHP uses a nominal type system with a strong behavioral subtyping relation. The subtyping relation is checked at compile time whereas the verification of types ...
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Type declarations ¶. Type declarations can be added to function arguments, return values, and, as of PHP 7.4.0, class properties. They ensure that the value ...
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PHP Manual ¶ · Basic syntax · Types · Variables · Constants · Expressions · Operators · Control Structures · Functions ...
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system() is just like the C version of the function in that it executes the given command and outputs the result. The system() call also tries to ...
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This is the context when using a comparison operator. The type conversions which occur in this context are explained in the Comparison with Various Types table.
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When a string is specified in double quotes or with heredoc, variables are parsed within it. There are two types of syntax: a simple one and a complex one. The ...
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PHP is a dynamically typed language, which means that by default there is no need to specify the type of a variable, as this will be determined at runtime.
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A map is a type that associates values to keys. This type is optimized for several different uses; it can be treated as an array, list (vector), hash table (an ...