[php] 변수형 변경하는 방법 gettype(), settype()

1. gettype()

<?php

$a = 123;
$b = "abc";
$c = 0.123;

echo "$a \t", gettype($a), "\n";
echo "$b \t", gettype($b), "\n";
echo "$c \t", gettype($c), "\n";

?>

 

2. settype()

<?php

$a = 123;
$b = 0.123;

echo "$a \t", gettype($a), "\n";
settype($a, "double");
echo "$a \t", gettype($a), "\n";

echo "$b \t", gettype($b), "\n";
settype($b, "string");
echo "$b \t", gettype($b), "\n";

?>