Created
December 23, 2013 14:05
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Serializeと小数
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<?php | |
/** | |
* 割り切れるとき | |
*/ | |
$decimal = 1/10; | |
echo $decimal . PHP_EOL; | |
//0.1と表示される | |
$serialized_decimal = serialize($decimal); | |
echo $serialized_decimal . PHP_EOL; | |
//d:0.1000000000000000055511151231257827021181583404541015625;と表示される | |
echo unserialize($serialized_decimal) . PHP_EOL; | |
//0.1と表示される | |
/** | |
* 割り切れないときはどうなるか。 | |
*/ | |
$decimal = 10/3; | |
echo $decimal . PHP_EOL; | |
//3.3333333333333と表示される | |
$serialized_decimal = serialize($decimal); | |
echo $serialized_decimal . PHP_EOL; | |
//d:3.333333333333333481363069950020872056484222412109375;と表示される | |
echo unserialize($serialized_decimal) . PHP_EOL; | |
//3.3333333333333と表示される |
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