检查字符串是否包含 php 中的字母
声明：本页面是StackOverFlow热门问题的中英对照翻译，遵循CC BY-SA 4.0协议，如果您需要使用它，必须同样遵循CC BY-SA许可，注明原文地址和作者信息，同时你必须将它归于原作者（不是我）：StackOverFlow
原文地址: http://stackoverflow.com/questions/22458156/
Warning: these are provided under cc-by-sa 4.0 license. You are free to use/share it, But you must attribute it to the original authors (not me):
StackOverFlow
check if the string contains alphabets in php
提问by Sabuj Hassan
How to check if the string has alphabets in PHP
如何在PHP中检查字符串是否有字母
The ctype_alphaand ctype_digitdoesn't help in it. is their any method?
的而ctype_alpha和 ctype_digit不会在它的帮助。他们有什么方法吗？
回答by Sabuj Hassan
You can use preg_matchfor this.
您可以preg_match为此使用。
if(preg_match("/[a-z]/i", $string)){
print "it has alphabet!";
}
If you want to check for all the characters to be alphabet, then use anchor around the regex. For example ^[a-z]+$.
如果要检查所有字符是否为字母表，请在正则表达式周围使用锚点。例如^[a-z]+$。
回答by Sabuj Hassan
Posted as requested
按要求发布
/^[a-zA-Z]+$/alpha, /^[0-9]+$/num, /^[a-zA-Z0-9]+$/alpha-num
/^[a-zA-Z]+$/字母、/^[0-9]+$/数字、/^[a-zA-Z0-9]+$/字母数字
or
或者
/^\pL+$/uUni alpha, /^\pN+$/uUni num, /^[\pL\pN]+$/uUni alpha-num
/^\pL+$/uUni alpha, /^\pN+$/uUni num, /^[\pL\pN]+$/uUni alpha-num
