[php] php 코드로 변수 타입 확인하기

1. gettype()

<?php

$a = 1;
$b = 0.1;
$c = "1";
$d = array();

$aType = gettype($a);
$bType = gettype($b);
$cType = gettype($c);
$dType = gettype($d);

echo "$aType\n";
echo "$bType\n";
echo "$cType\n";
echo "$dType\n";

?>

 

2. gettype()

<?php

$aType = gettype(1);
$bType = gettype(0.1);
$cType = gettype("1");
$dType = gettype(array());

echo "$aType\n";
echo "$bType\n";
echo "$cType\n";
echo "$dType\n";

?>

 

3. gettype()

<?php

echo gettype(1), "\n";
echo gettype(0.1), "\n";
echo gettype("1"), "\n";
echo gettype(array()), "\n";

?>

 

4. gettype()

<?php

var_dump(gettype(1));
var_dump(gettype(0.1));
var_dump(gettype("1"));
var_dump(gettype(array()));

?>