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PHP implements number formatting, a function that adds commas to every three digits of a number
PHP implements number formatting, a function that adds commas to every three digits of a number
This article mainly introduces PHP to implement number formatting and the function of adding commas to every three digits of numbers. Interested friends can refer to it. I hope it will be helpful to everyone.
The specific code is as follows:
function num_format($num){
if(!is_numeric($num)){
return false;
}
$num = explode('.',$num);//把整数和小数分开
$rl = $num[1];//小数部分的值
$j = strlen($num[0]) % 3;//整数有多少位
$sl = substr($num[0], 0, $j);//前面不满三位的数取出来
$sr = substr($num[0], $j);//后面的满三位的数取出来
$i = 0;
while($i <= strlen($sr)){
$rvalue = $rvalue.','.substr($sr, $i, 3);//三位三位取出再合并，按逗号隔开
$i = $i + 3;
}
$rvalue = $sl.$rvalue;
$rvalue = substr($rvalue,0,strlen($rvalue)-1);//去掉最后一个逗号
$rvalue = explode(',',$rvalue);//分解成数组
if($rvalue[0]==0){
array_shift($rvalue);//如果第一个元素为0，删除第一个元素
}
$rv = $rvalue[0];//前面不满三位的数
for($i = 1; $i < count($rvalue); $i++){
$rv = $rv.','.$rvalue[$i];
}
if(!empty($rl)){
$rvalue = $rv.'.'.$rl;//小数不为空，整数和小数合并
}else{
$rvalue = $rv;//小数为空，只有整数
}
return $rvalue;
}In addition, you can use the function that comes with the systemstring number_format (float number [, int decimals [, string dec_point, string thousands_sep]] ) :
Example:
echo number_format('169856420');
The output result will be:169,856,420
echo number_format('1000000',2);
The output result will be: 1,000,000.00
echo number_format('1000000',2,',','.');
The output result will be: 1.000.000,00
Summary: The above is the entire content of this article, I hope It can be helpful to everyone’s study.
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