What to do if php trim() cannot remove spaces

Solution to the problem that php trim() cannot remove the spaces: Use regular expressions to remove the spaces at the beginning of the string, including full-width and half-width, the code is [$user = mb_ereg_replace('^(　| ) ',' ', $name)].

Solution to the problem that php trim() cannot remove spaces:

php’s trim() is the one we use most String space removal function, but trim() cannot remove half-width spaces. At this time, you need to take other methods

This regular expression can remove the first space in the string , regardless of full-width or half-width

The code is as follows:

  $user = mb_ereg_replace('^(　| )+','', $name);

  $user = mb_ereg_replace('(　| )+$','', $name);

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