替换 带有空白或空字符串 PHP

Question

好吧，我已经尝试过这些，但似乎它们都不起作用，我的示例字符串是

 $text_description="       Hello world! lorel ipsum";

 $text_description= str_replace(" "," ",$text_description);
 $text_description = preg_replace("/&#?[a-z0-9]+;/i"," ",$text_description);
 $text_description=html_entity_decode($text_description);

Answer 1

$text_description="       Hello world! lorel ipsum";
$text_description = str_replace(' ', ' ', $text_description);
echo $text_description;

输出：

你好，世界！洛雷尔 ipsum