如何使用preg_match测试空格? [英] How do I use preg_match to test for spaces?

问题描述

我将如何使用PHP函数preg_match()测试字符串以查看是否存在空格?

How would I use the PHP function preg_match() to test a string to see if any spaces exist?

此句子的空格将被测试为真"

"this sentence would be tested true for spaces"

" thisOneWouldTestFalse"

"thisOneWouldTestFalse"

推荐答案

如果您对任何空白(包括制表符等)感兴趣，请使用\s

If you're interested in any white space (including tabs etc), use \s

if (preg_match("/\\s/", $myString)) {
   // there are spaces
}

如果您只对空格感兴趣，那么您甚至不需要正则表达式:

if you're just interested in spaces then you don't even need a regex:

if (strpos($myString, " ") !== false)

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