- var_dump: documentation ( source)
<?php
$x = 3.4; //float
var_dump($x);
$tmp = $x;
var_dump($tmp);
$tmp = array($x);
var_dump($tmp);
/*
array (size=1)
0 => float 3.4
*/
$tmp = array(array($x));
var_dump($tmp);
/*
array ( 0 => array ( 0 => 3.3999999999999999, ), )
*/