Removing more than one white-space

问题

So, If I have a string like

"hello    what is  my    name"

How can I take all of the spaces and replace each with only one space?

回答1:

This should do it:

$replaced = preg_replace('/\s\s+/', ' ', $text);

Output:

hello what is my name

回答2:

Found the solution:

<?php

$str = ' This is    a    test   ';
$count = 1;
while($count)
    $str = str_replace('  ', ' ', $str, $count);

?>

回答3:

Try this:-

$desc = "hello    what is  my    name";
echo trim(preg_replace('/\s+/', ' ', $desc));

回答4:

You can use trim(), So in your case

$result = trim('hello    what is  my    name');
echo $result;

it will output like this

hello what is my name

As of this PHP Manual Ref :

This function returns a string with whitespace stripped from the beginning and end of str. Without the second parameter, trim() will strip these characters:

• " " (ASCII 32 (0x20)), an ordinary space.
• "\t" (ASCII 9 (0x09)), a tab.
• "\n" (ASCII 10 (0x0A)), a new line (line feed).
• "\r" (ASCII 13 (0x0D)), a carriage return.
• "\0" (ASCII 0 (0x00)), the NUL-byte.
• "\x0B" (ASCII 11 (0x0B)), a vertical tab.

来源：https://stackoverflow.com/questions/2887023/removing-more-than-one-white-space