wordpress函数absint()用法示例

absint( mixed $maybeint )

描述

将值转换为非负整数。

参数

$maybeint

(mixed)
(Required)
希望转换为非负整数的数据。

返回值

(int) 一个非负整数。

源代码

File: wp-includes/functions.php

function absint( $maybeint ) {
	return abs( intval( $maybeint ) );
}

更新日志

更多信息

Synonym of abs( intval( $foo ) );

相关函数

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使用举例

当传递一个负整数时，将得到非负绝对值。传递非数字字符串返回 0，但传递 -10 返回 10：

echo absint( 'number' );		// 0
echo absint( 10 );				// 10
echo absint( -10 );				// 10

传递浮点数时，它将返回整数值。

echo absint(20.33);            // 20
echo absint(-20.33);           // 20
echo absint(false);            // 0
echo absint(true);             // 1
echo absint(array(10,20,30))   // 1
echo absint(NULL)              // 0