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@ 2016-12-03T00:02:13Z

<?php

ini_set("precision", 20);

$x = 3.4; //float
var_dump($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, ), )
*/

Output
Performance
VLD
References
Branches

var_dump: documentation ( source)
ini_set: documentation ( source)

preferences:dark modelive preview

55.52 ms | 402 KiB | 5 Q