Use less empty () functions during php Development

As we all know, php is a weak type of language, so we must be rigorous in the development process at ordinary times. do not easily bury some low-level pitfalls. The empty () function should be used with caution. let's take a look at the following examples:

As we all know, php is a weak type of language, so we must be rigorous in the development process at ordinary times. do not easily bury some low-level pitfalls. The empty () function should be used with caution. let's take a look at the following examples:

$ ZeroInt = 0;

Var_dump (empty ($ zeroInt); // bool (true)

$ ZeroIntStr = "0 ";

Var_dump (empty ($ zeroIntStr); // bool (true)

$ ZeroFloat = 0.0;

Var_dump (empty ($ zeroFloat); // bool (true)

$ ZeroFloatStr = "0.0 ";

Var_dump (empty ($ zeroFloatStr ));//Bool (false)Error-prone scenario: for example, if the latitude field is of the floating point type, php uses SQL to find out that conversion is a string type. if it is determined by empty, it is very likely to cause problems.

$ SpaceStr = ""; // Space

Var_dump (empty ($ spaceStr ));//Bool (false)Remember that the space is not empty

$ EmptyArr = array ();

Var_dump (empty ($ emptyArr); // bool (true)

$ EmptyStr = "";

Var_dump (empty ($ emptyStr); // bool (true)

$ Null = null;

Var_dump (empty ($ null); // bool (true)

$ EmptyArr2 = array (

Array ()

);

Var_dump (empty ($ emptyArr2 ));//Bool (false)This is also prone to errors.

Var_dump (empty ($ undefine); // bool (true)

?>

Php sacrifices rigor for convenience and flexibility. I think this is an embarrassing part of php. as a phper, you must start from yourself and strictly demand yourself, make programs written by yourself more stable.