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php str_pad() 将字符串填充成指定长度的字符串 - 站长搜索
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php str_pad() 将字符串填充成指定长度的字符串

PHP 2014-12-09 11:36:11 转载来源: 网络整理/侵权必删

本文为大家讲解的是php下用str_pad()函数 将字符串填充成指定长度的字符串的用法。感兴趣的同学参考下

本文为大家讲解的是php下用str_pad()函数 将字符串填充指定长度的字符串的用法。感兴趣的同学参考下。
/**
* 将字符串填充成指定长度的字符串(多字节安全)
* @param string $str 指定被填充的字符串
* @param int $len 指定被填充的字符串的长度,如果值为负数或小于字符串的长度则不填充
* @param string $pad_str 要填充的字符串
* @param int $pad_type 指定填充的方向STR_PAD_RIGHT,STR_PAD_LEFT或STR_PAD_BOTH
* @return string
*/

// string str_pad(string $str, int $len, string $pad_str, string $pad_type);

echo str_pad($result2[0],6,"0",STR_PAD_LEFT);


<?php
$input = "Alien";
echo str_pad($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_"
?>

标签: 字符串 php str pad 填充 指定 长度


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