Three ways to convert data types in PHP, data types three ways _php tutorial

Three ways to convert data types in PHP, data types three ways

PHP's data type conversions are cast, and the PHP data types that are allowed to be converted are:

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

There are three ways to convert PHP data types:

1. Add the target type enclosed in parentheses before the variable you want to convert
2. Use 3 specific types of conversion functions, intval (), Floatval (), Strval ()
3. Using the common type conversion function Settype (mixed var,string type)

First conversion Mode: (int) (bool) (float) (string) (array) (object)
Copy the 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)
?>

Second mode of conversion: Intval () floatval () Strval ()
Copy the Code code as follows:
<?php
$str = "123.9ABC";
$int =intval ($STR); Post-conversion value: 123
$float =floatval ($STR); Post-conversion value: 123.9
$str =strval ($float); Converted string: "123.9"
?>

The third mode of conversion: Settype ();
Copy the 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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