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分享php中几个字符函数小结

程序员文章站 2024-04-04 19:40:29
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下面小结PHP中的几个字符函数, 小结一下:

1)ucfirst
将首字母变大写,比如
$string = "this is my web development blog";

echo ucfirst($string);

// Output: This is my web development blog

2) lcfirst,将首字母变小写
$string = "This is my Web Development Blog";

echo lcfirst($string);

// Output: this is my Web Development Blog

3)strtoupper,将整个字符串变大写
$string = "this is my web development blog";

echo strtoupper($string);

// Output: THIS IS MY WEB DEVELOPMENT BLOG

4)strtoplower,将整个字符串变小写
$string = "tHiS is mY WeB DevElOpMenT bLoG";

echo strtolower($string);

// Output: this is my web development blog

5)ucwords(),可以将句子中每个单词的第一个字母变大写,比如
$string = "this is my web development blog";

echo ucwords($string);

// Output: This Is My Web Development Blog