Home  >  Article  >  Backend Development  >  php str_pad 函数使用详解_PHP

php str_pad 函数使用详解_PHP

WBOY
WBOYOriginal
2016-06-01 12:23:26700browse

string str_pad ( string , int pad_length , string pad_string , int pad_type);
string 指定字符串,pad_length指定长度,pad_string用来填充的字符串(可选参数),pad_type指定填充位置(可选参数,STR_PAD_LEFT,STR_PAD_BOTH);
如果pad_string , pad_type均为空,那么就等于默认pad_string 为空格, pad_type就是自动填充在指定字符串的末端.
复制代码 代码如下:

$string = "test";
echo str_pad($string , 10); // produces "test ";
?>

其余两个例子:
复制代码 代码如下:

$string = "test";
echo str_pad($string , 10,'+',STR_PAD_LEFT); // produces "++++++test";
?>

复制代码 代码如下:

$string = "test";
echo str_pad($string , 10,'+',STR_PAD_BOTH); // produces "+++test+++";
?>

Statement:
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn