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php method to convert integers to floating point types: 1. Add the target type "(float)" enclosed in parentheses before the integer variable to be converted, the syntax is "integer variable (float)"; 2. Use the floatval() function with the syntax "floatval (integer variable)".
The operating environment of this tutorial: windows7 system, PHP7.1 version, DELL G3 computer
Method 1: In The variable to be converted is preceded by the target type "(float)" enclosed in parentheses
<?php header("Content-type:text/html;charset=utf-8"); $int = 123; echo '变量的原类型为:'; var_dump($int); $float = (float)$int; echo '变量转换后的类型为:'; var_dump($float); ?>
Output:
Note:
When the variable type is cast by adding the target type enclosed in parentheses before the variable, the variable types allowed in the parentheses are as follows:
(int), (integer): Convert to integer type;
(bool), (boolean): Convert to Boolean type;
(float), (double), (real): Convert to floating point type;
(string): Convert to string type;
(array): Convert to array type;
(object): Convert to object type.
Method 2: Use floatval() function
<?php header("Content-type:text/html;charset=utf-8"); $int = 547; echo '变量的原类型为:'; var_dump($int); $float = floatval($int); echo '变量转换后的类型为:'; var_dump($float); ?>
Output:
Description: floatval()
floatval - Get the floating point value of the variable
Syntax:
floatval ( mixed $var ) : float
Return The float value of variable var.
Parameter: var can be any scalar type. You cannot use floatval() with arrays or objects.
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