Three ways to convert data types in PHP _php tips

PHP data type conversions are cast, and PHP data types that allow conversion are:

1. (int), (integer): Convert to Plastic
2. (float), (double), (real): Convert to floating point type
3. (string): Convert to String
4. (bool), (Boolean): Convert to Boolean type
5. (array): Converting an array of
6. (object): Convert to Object

There are three ways to convert PHP data types:

1. Precede the variable to be converted with a target type enclosed in parentheses
2. Use 3 specific types of conversion functions, intval (), Floatval (), Strval ()
3. Use common type Conversion functions Settype (mixed var,string type)

First mode of conversion: (int) (bool) (float) (string) (array) (object)

Copy Code code as follows:

<?php
$num 1=3.14;
$num 2= (int) $num 1;
Var_dump ($num 1); Output float (3.14)
Var_dump ($num 2); Output int (3)
?>

The second mode of conversion: Intval () floatval () Strval ()

Copy Code code as follows:

<?php
$str = "123.9ABC";
$int =intval ($STR); Value after conversion: 123
$float =floatval ($STR); Value after conversion: 123.9
$str =strval ($float); After conversion string: "123.9"
?>

The third mode of conversion: Settype ();

Copy Code code as follows:

<?php
$num 4=12.8;
$FLG =settype ($num 4, "int");
Var_dump ($FLG); output bool (TRUE)
Var_dump ($num 4); Output int (12)
?>

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