How php casts a value to float

This article mainly introduces how php converts the value mandatory type to float, which has a certain reference value, and interested friends can refer to it. I hope you can learn a lot after reading this article.

Method: 1, in front of the variable enclosed in parentheses with the target type "(float)", syntax "(float) $val"; 2, with floatval (), syntax "floatval ($val)"; 3, with settype (), syntax "settype ($val," float ")".

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

Php converts a value cast type to float

Method 1: add the target type "(float)" enclosed in parentheses before the variable to be converted

Method 2: use the floatval () function

Floatval (): used to get the floating-point value of a variable

Output result:

Method 3: use the settype () function

Syntax:

Settype ($var, $type)

The settype () function sets the variable $var to the specified $type type.

Example

Output result:

Description: the value that can be set for $type

"boolean" (or "bool", starting with PHP 4.2.0)

"integer" (or "int", starting with PHP 4.2.0)

"float" (available only after PHP 4.2.0, "double" used in older versions is now disabled)

"string"

"array"

"object"

"null" (since PHP 4.2.0)

The settype () function changes the type of the variable itself.

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