复制代码 代码如下:
$sourceNumber = "1";
$newNumber = substr(strval($sourceNumber+1000),1,3);
echo "$newNumber";
?>
这个时候就会出现：001
如果要增加位数的话可以将1000加大，然后把3也加大。
举例：如果我要补上 "4个0" 第03行 就要变成这样。
复制代码 代码如下:
$newNumber = substr(strval($sourceNumber+100000),1,5);
?>
其实就是总共要显示几位数字，就把$sourceNumber+1后面补上多少个0，最后一个数字就直接改成显示几位数字。
更好的方法：
string str_pad ( string $input, int $pad_length [, string $pad_string [, int $pad_type]] )
复制代码 代码如下:
$input = "Alien";
echo str_pad($input, 10);
// produces "Alien "
echo str_pad($input, 10, "-=", STR_PAD_LEFT);
// produces "-=-=-Alien"
echo str_pad($input, 10, "_", STR_PAD_BOTH);
// produces "__Alien___"
echo str_pad($input, 6 , "___");
// produces "Alien_"
?>
补齐字符串的长度.以pad_string 补.默认补在右边，如果STR_PAD_LEFT就补到左边，STR_PAD_BOTH两边一起补。
下次用str_pad，毕竟是内置的，肯定比自定义的快。
/*
你上面的方法我觉得不怎么好，介绍一下我写的一个方法。方法函数如下，这样当你要的结果001的话，方法：dispRepair('1',3,'0')
功能：补位函数
str:原字符串
type：类型，0为后补，1为前补
len：新字符串长度
msg：填补字符
*/
复制代码 代码如下:
function dispRepair($str,$len,$msg,$type='1') {
$length = $len - strlen($str);
if($lengthif ($type == 1) {
$str = str_repeat($msg,$length).$str;
} else {
$str .= str_repeat($msg,$length);
}
return $str;
}
Hot AI Tools
Undresser.AI Undress
AI-powered app for creating realistic nude photos
AI Clothes Remover
Online AI tool for removing clothes from photos.
Undress AI Tool
Undress images for free
Clothoff.io
AI clothes remover
Video Face Swap
Swap faces in any video effortlessly with our completely free AI face swap tool!
Hot Article
Hot Tools
SublimeText3 Linux new version
SublimeText3 Linux latest version
MinGW - Minimalist GNU for Windows
This project is in the process of being migrated to osdn.net/projects/mingw, you can continue to follow us there. MinGW: A native Windows port of the GNU Compiler Collection (GCC), freely distributable import libraries and header files for building native Windows applications; includes extensions to the MSVC runtime to support C99 functionality. All MinGW software can run on 64-bit Windows platforms.
SAP NetWeaver Server Adapter for Eclipse
Integrate Eclipse with SAP NetWeaver application server.
mPDF
mPDF is a PHP library that can generate PDF files from UTF-8 encoded HTML. The original author, Ian Back, wrote mPDF to output PDF files "on the fly" from his website and handle different languages. It is slower than original scripts like HTML2FPDF and produces larger files when using Unicode fonts, but supports CSS styles etc. and has a lot of enhancements. Supports almost all languages, including RTL (Arabic and Hebrew) and CJK (Chinese, Japanese and Korean). Supports nested block-level elements (such as P, DIV),
Dreamweaver CS6
Visual web development tools
