How to convert numbers to decimals in php

In PHP, we often encounter number conversion problems. Among them, converting numbers to decimals is a common need. Below, we will briefly introduce how to convert numbers to decimals in PHP.

First of all, what we need to understand is that in PHP, numbers are divided into two types: integers and decimals. Integers include positive integers, negative integers, zero, etc., while decimals include positive decimals, negative decimals, etc. In PHP, we can use built-in functions to convert numbers to decimals.

The function in PHP that converts numbers to decimals is the floatval() function. What this function does is convert its argument to a floating point number.

The following is the syntax of the floatval() function:

float floatval (mixed $var)

Among them, var is the value to be converted to a floating point number, which can be a character Strings, integers, etc. If the value of parameter var is a string, the string must begin with a number.

The following is an example of the floatval() function:

$number = 123;
$number_float = floatval($number);
echo $number_float;

The output result is:

123

The above code converts the integer 123 into a floating point number and assigns it to the $number_float variable. Finally, use the echo statement to output the value of the $number_float variable. The output result is 123, indicating that the conversion is successful.

In addition to using the floatval() function, we can also use forced type conversion to convert numbers to decimals. Forced type conversion can be achieved by adding (float) or (double) in front of the number, as follows:

$number = 123;
$number_float = (float)$number;
echo $number_float;

Or:

$number = 123;
$number_float = (double)$number;
echo $number_float;

The above code The same as the previous example code, except that the floatval() function is changed to a forced type conversion.

Summary

The above are several ways to convert numbers into decimals. In practical applications, we can choose different methods to convert digital types according to specific needs. It should be noted that when performing type conversion, ensure that the type of the parameter passed in is correct, so as to ensure the accuracy of the conversion result.

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