How can i check string has contains only letters numbers and spaces in any language?
I have tried bellow but it's not checks special characters like -*/.
preg_match("/[\p{L}]/u", $string )
preg_match("/[\p{N}]/u", $string )
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You can use
preg_match('~^[\p{L}\p{N}\s]+$~uD', $string)
Details
^- start of string[\p{L}\p{N}\s]+- one or more letters, digits or whitespaces$- end of string.
The u modifier will enable Unicode string parsing and also make all patterns in the regex Unicode aware, and D will make $ match the very end of the string.
Wiktor Stribiżew
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~ see https://stackoverflow.com/a/938113/251674 – Manuel Alves Oct 08 '21 at 08:20
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1@ManuelAlves These are called "*regex delimiters*", see [PHP documentation](http://docs.php.net/manual/en/regexp.reference.delimiters.php). – Wiktor Stribiżew Oct 08 '21 at 08:35