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This article mainly explains "what is the meaning of php double vertical bar". The content of the article is simple and clear, and it is easy to learn and understand. Please follow the editor's train of thought to study and learn "what does php double vertical line mean?"

The php double vertical bar indicates that the expression of the "or", "or" operator in the PHP logical operator is "x | | y", which means that if at least one of the two variable values x and y is true, true is returned.

The operating environment of this paper: Windows7 system, PHP7.1, Dell G3.

What does php double vertical bar mean?

The php double vertical bar represents the OR in the PHP logical operator.

X | | y

Or

Returns true if at least one of x and y is true

X=6y=3 (xylene 5 | | yearly room5) returns false

More logical operators are as follows:

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