Replacing multiple spaces with a single space simple single line of php code:

$output = preg_replace(‘/\s+/’, ‘ ‘, $input);

This mean that spaces, tabs or line breaks (one or more) will be replaced by a single space.

Replace multiple spaces with one space:

$output = preg_replace(‘/\s+/’, ‘ ‘, $input);

Replace one or multiple tabs with one space:

$output = preg_replace(‘/\t+/’, ‘ ‘, $input);

Replace one or multiple new lines with one space:

$output = preg_replace(‘/\n\r+/’, ‘ ‘, $input);

 

Find more about regular expressions at

http://www.regular-expressions.info/reference.html

Examples:

\d, \w and \s

Shorthand character classes matching digits, word characters (letters, digits, and underscores), and whitespace (spaces, tabs, and line breaks).

PHP remove multiple whitespaces
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