How to convert string to floating point number in php

PHP method to convert a string to a floating point number: 1. Use forced type conversion and add the target type "(float)" enclosed in parentheses before the string variable to be converted, for example " (float)"23.25""; 2. Use the floatval() function to obtain the floating point value of the variable.

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

php string conversion For floating point numbers

#1, forced type conversion--add the target type enclosed in parentheses before the variable to be converted

allowed The converted PHP data types are:

• (int), (integer): converted to integer

• (float), (double), (real): Convert to floating point type

• (string): Convert to string

• (bool), (boolean): Convert Into Boolean type

• (array): Convert to array

• (object): Convert to object

Example: Convert string type to float type

<?php   
$str="23.25";   
$float=(float)$str;   
var_dump($str); 
var_dump($float); 
?>

2. Use floatval() function--floating point conversion function

floatval — Get the floating point value of a variable

Example:

<?php   
$str="25.05";   
$float=floatval($str);   
var_dump($str); 
var_dump($float); 
?>

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