php 字母大小写转换的函数
分享下,在php编程中,将字母大小写进行转换的常用函数。
1.将字符串转换成小写
strtolower(): 该函数将传入的字符串参数所有的字符都转换成小写,并以小定形式放回这个字符串
2.将字符转成大写
strtoupper(): 该函数的作用同strtolower函数相反,是将传入的字符参数的字符全部转换成大写,并以大写的形式返回这个字符串.用法同strtolowe()一 样.
3.将字符串首字符转换成大写
ucfirst(): 该函数的作用是将字符串的第一个字符改成大写,该函数返回首字符大写的字符串.用法同strtolowe()一样.
4.将字符串每个单词的首字符转换成大写
ucwords(): 该函数将传入的字符串的每个单词的首字符变成大写.如"hello world",经过该函数处理后,将返回"Hello Word".用法同strtolowe()一样.
以上是php中常用的字符串大上写转换函数,具体用例可以参考:php 字母大小写转换的实例总结 这篇文章。
如果在使用过程中有问题,可以参考文章:php大小写敏感问题的总结,以寻求正确的解决方法。
特此分享,以帮助有缘的朋友。

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