PHP str_replace用下划线替换空格 [英] PHP str_replace replace spaces with underscores

问题描述

有没有我看不到的原因，为什么这不起作用?

Is there a reason that I'm not seeing, why this doesn't work?

    $string = $someLongUserGeneratedString;
    $replaced = str_replace(' ', '_', $string);
    echo $replaced;

输出中仍然包含空格...任何想法都很棒

The output still includes spaces... Any ideas would be awesome

推荐答案

我建议您使用它，因为它将检查一次或多次出现的空白(如Lucas Green所建议的那样).

I'll suggest that you use this as it will check for both single and multiple occurrence of white space (as suggested by Lucas Green).

$journalName = preg_replace('/\s+/', '_', $journalName);

代替:

$journalName = str_replace(' ', '_', $journalName);

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