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This article introduces the knowledge of "how php converts strings into numbers and retains two decimal places". In the operation of actual cases, many people will encounter such a dilemma, so let the editor lead you to learn how to deal with these situations. I hope you can read it carefully and be able to achieve something!

Php converts a string into a number and retains two decimal places: 1, with the number_format () function, syntax "number_format ($str, 2)"; 2, with floatval () and round () function, syntax "round (floatval ($str))".

Operating environment of this tutorial: windows7 system, PHP7.1 version, DELL G3 computer

Php converts a string to a number and retains two decimal places

1. Use the number_format () function

The number_format () function is used to convert strings to numbers. It returns the formatted number on success, otherwise it gives E_WARNING on failure.

2. Use the floatval () + round () function

The floatval () function converts a string to a floating-point number, while the round () function rounds a floating-point number, leaving two decimal places.

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