php 文字列を小数(double)に変換するサンプル
環境
PHP 8.1.2
Ubuntu 22.04.1 LTS
構文
$変数名= (double)文字列;
文字列を小数(double)に変換するには、(double)を使います。
使用例
<?php
$n1 = (double)"12.73";
$n2 = (double)"-25.12";
$n3 = (double)"3";
echo $n1 , "\n";
echo $n2 , "\n";
echo $n3;
?>
<?php
$n1 = (double)"12.73";
$n2 = (double)"-25.12";
$n3 = (double)"3";
echo $n1 , "\n";
echo $n2 , "\n";
echo $n3;
?>
<?php $n1 = (double)"12.73"; $n2 = (double)"-25.12"; $n3 = (double)"3"; echo $n1 , "\n"; echo $n2 , "\n"; echo $n3; ?>
実行結果
12.73
-25.12
3