How to convert float to int type in php

How to convert float to int type in PHP: 1. Use forced type conversion and add the target type "(int)" enclosed in parentheses before the float variable to be converted, for example " (int)3.14"; 2. Use the intval() function to obtain the integer value of the variable.

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

php will convert float Into type int

#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 float type to int type

<?php   
$num1=3.14;   
$num2=(int)$num1;   
var_dump($num1); //输出float(3.14)   
var_dump($num2); //输出int(3)   
?>

Output:

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2. Use the intval() function

<?php   
$num1=123.9;   
$num2=intval($num1); 
var_dump($num1); 
var_dump($num2); 
?>

Output:

##intval( ) function is used to obtain the integer value of a variable.

intval() function returns the integer value of variable var by using the specified base conversion (default is decimal). intval() cannot be used with object, otherwise an E_NOTICE error will be generated and 1 will be returned.

Syntax:

int intval ( mixed $var [, int $base = 10 ] )

Parameter description:

• $var: The quantity value to be converted to integer.

• #$base: The base used for conversion.

If base is 0, the base used is determined by detecting the format of var:

• If the string includes "0x" ( or "0X"), use hexadecimal (hex); otherwise,

• If the string starts with "0", use octal (octal); otherwise,

• Decimal will be used.

Return value: The integer value of var is returned on success, and 0 is returned on failure. An empty array returns 0, a non-empty array returns 1.

Expand knowledge:

Generally, in this situation, unexpected price changes will occur in actual work. bug

If you have to pass a float price (2 decimal places)

and you need to convert it to int after doing the product (strange requirement)

intval(39.80*100) = 3979
intval(round(floatval($value) * 100)) = 3980

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