Question

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php – regular expression – PCRE does not support \L, \l, \N, \P,

i have a function

public function valid_city_state($data)
{
    $data = trim($data);

    if(!$data)
    {
        return TRUE;            
    }

    $valid = preg_match("/^[a-zA-Z\u0080-\u024F\s\/\-\)\(\`\.\"\']+$/",trim($data));

    if(!$valid)
    {
        $this->form_validation->set_message('valid_city_state', 'Please enter a valid %s.');
        return FALSE;           
    }
    else
    {
        return TRUE;
    }       
}

it has regular expression

$valid = preg_match("/^[a-zA-Z\u0080-\u024F\s\/\-\)\(\`\.\"\']+$/",trim($data));

when executing it , it gives the following error

A PHP Error was encountered

Severity: Warning

Message: preg_match() [function.preg-match]: Compilation failed: PCRE does not support \L, \l, \N{name}, \U, or \u at offset 9

Filename: home/auth.php

Line Number: 1632

looked at some examples but could not get what is needed

php – regular expression – PCRE does not support \L, \l, \N, \P,

http://www.sitepoint.com/forums/showthread.php?748713-Preg-match-with-php-PCRE-error

please help . thanks in advance .

UPDATE

this regular expresson works fine in javascript

Answer 1

$valid = preg_match("/^[a-zA-Z\x{0080}-\x{024F}\s\/\-\)\(\`\.\"\']+$/u",trim($data));

Switch the us for xs and wrap the hex in braces like {0080}, also add a trailing u flag.