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HomeBackend DevelopmentPHP Tutorialphp str_pad 函数用法简介_PHP

语法
str_pad(string,length,pad_string,pad_type)
参数 描述
string 必需。规定要填充的字符串。
length 必需。规定新字符串的长度。如果该值小于原始字符串的长度,则不进行任何操作。
pad_string 可选。规定供填充使用的字符串。默认是空白。
pad_type 可选。规定填充字符串的那边。
可能的值:
STR_PAD_BOTH - 填充到字符串的两头。如果不是偶数,则右侧获得额外的填充。
STR_PAD_LEFT - 填充到字符串的左侧。
STR_PAD_RIGHT - 填充到字符串的右侧。这是默认的。

例子 1
输出:
Hello World.........
例子 2
输出:
.........Hello World
例子 3
输出:
.:.:Hello World.:.:.

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