Replacing Spaces with Underscores

Question

I have a PHP Script that users will enter a name like: Alex_Newton,

However, some users will use a space rather than an underscore, so my question is:

Answer 1

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

http://php.net/manual/en/function.str-replace.php

Answer 2

Call http://php.net/str_replace: $input = str_replace(' ', '_', $input);

Answer 3

you can use str_replace say your name is in variable $name

$result = str_replace(' ', '_', $name);

another way is to use regex, as it will help to eliminate 2-time space etc.

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

Answer 4

You can also do this to prevent the words from beginning or ending with underscores like _words_more_words_, This would avoid beginning and ending with white spaces.

$trimmed = trim($string); // Trims both ends
$convert = str_replace('', '_', $trimmed);

Answer 5

This is part of my code which makes spaces into underscores for naming my files:

$file = basename($_FILES['upload']['name']);
$file = str_replace(' ','_',$file);

Answer 6

Use str_replace:

str_replace(" ","_","Alex Newton");