我倾向于使用 如果我在性能方面使用正则表达式会有什么不同吗？
rtrim ， ltrim 和修剪以去除末端，左侧或右侧的空格。 我还使用它们去除字符串末尾或字符串开头的字符。 它比正则表达式更快吗？ 以下代码有什么问题吗？
$ string =“hello：”;
$ string = rtrim（trim（$ string），“：”）; // hello
I tend to use rtrim, ltrim and trim to strip off spaces at the end, left or right. I also use them to strip off the characters at the end or the beginning of the string. Is it faster than a regular expression? Is there anything wrong with the following code?
$string = " hello: ";
$string = rtrim(trim($string), ":"); //hello
Would it make any difference if I were to use a regular expression in terms of performance?
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