从字符串中删除新行，并用一个空格PHP替换？
假设以下是带有新行的字符串
$sentence = " My name is John Smith My Favorite subject is PHP. ";
我们需要删除上面的新行并替换为空白，即输出应为-
My name is John Smith My Favourite subject is PHP.
为此，请使用trim()preg_replace()进行替换。
示例
PHP代码如下
<!DOCTYPE html>
<html>
<body>
<?php
$sentence = "
My name is John Smith
My Favorite subject is PHP.
";
$sentence = trim(preg_replace('/\s\s+/', ' ', $sentence));
echo $sentence;
?>
</body>
</html>输出结果
这将产生以下输出
My name is John Smith My Favorite subject is PHP.
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