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<emptyget_defined_vars>
Last updated: Mon, 16 Jul 2012

floatval

(PHP 4 >= 4.2.0, PHP 5)

floatval -- 获取变量的浮点值

描述

float floatval ( mixed var )

返回变量 varfloat 数值。

var 可以是任何标量类型。你不能将 floatval() 用于数组或对象。

<?php
$var
= '122.34343The';
$float_value_of_var = floatval ($var);
print
$float_value_of_var; // 打印出 122.34343
?>

参见 intval()strval()settype()类型戏法




<emptyget_defined_vars>
 Last updated: Mon, 16 Jul 2012
 
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