PHP_EOL;var_dump(round( 1.55, 1, PHP_ROUND_HALF_ODD));var_dump(round(-1.55, 1, PHP_ROUND_HALF_ODD));?> 以上示例会输出: Using PHP_ROUND_HALF_UP with 1 decimal digit precision float(1.6) float(-1.6) Using PHP_ROUND_HALF_DOWN with 1 decimal digit precision float(1.5) float(-1.5...
,取整数MMath.round(5.80) --- " + Math.round(5.80) + "");//四舍五入,取整数 document.write("四舍五入,保留两位小数...Math.round((5.80*100)/100) --- " + Math.round((5.80*100)/100...
所以,我创建了一个: public static function randomFloat(int|float $min, int|float $max, $decimals = 2): float { $times = 10 ** $decimals; return (float) random_int(round($min * $times), round($max * $times)) / $times; } ...
In the for loop, we’ve defined that the value of the variable $number should be increased by the value 1 in each loop round, starting at 1, until the variable has reached the value 10. We can stop this loop prematurely using break as soon as $number has reached the valu...
另一种方法是使用ctype_digit()函数。这个函数可以判断一个字符串是否只包含数字字符。例如,以下代码可以判断字符串”abc123″是否为有效数字: “` $str = “abc123”; if (ctype_digit($str)) { echo “是有效数字”; } else { echo “不是有效数字”; ...
PHP_EOL;var_dump(round( 1.55, 1, PHP_ROUND_HALF_ODD));var_dump(round(-1.55, 1, PHP_ROUND_HALF_ODD));?> 以上示例会输出: Using PHP_ROUND_HALF_UP with 1 decimal digit precision float(1.6) float(-1.6) Using PHP_ROUND_HALF_DOWN with 1 decimal digit precision float(1.5) float(-1.5...
2. 使用数学函数或字符串处理函数将数字分解为整数和小数部分。3. 如果使用数学函数,可以使用floor()函数获取整数部分,$integerPart = floor($num);使用round()函数或ceil()函数获取小数部分,$decimalPart = $num – $integerPart。4. 如果使用字符串处理函数,可以将数字转换为字符串,$str = strval($num);...
通过下面测试封装的方法,想保留几位小数由你决定(传递小数,传递你要保留的位数):function truncateDecimal($number, $digit = 2) { $multiplier...= pow(10, $digit); return floor($number * $multiplie...
}// 分离整数和小数部分$integer=floor($num);$decimal=round(($num-$integer) *100);// 整数部分转换$integerStr='';$zeroCount=0;$unitPos=0;if($integer==0) {$integerStr=$cnNums[0]; }else{while($integer>0) {$digit=$integer%10;$integer=floor($integer/10);if($digit==0) {$zeroCou...
Add support for 4 new rounding modes to the round() function. debug_zval_dump() now indicates whether an array is packed. Fix GH-12143 (Optimize round). Changed return type of long2ip to string from string|false. Fix GH-12143 (Extend the maximum precision round can handle by one digit)...