Programalama > PHP

public function validate_data( $data = '' , $allowed_patterns = array() , $trim = true , $additional_chars = '' )
{
    $patterns = array(
        'all' => 'qwertyuopasdfghjklizxcvbnmQWERTYUIOPASDFGHJKLZXCVBNMgüsiöçGÜSIÖÇ 0123456789+?_-{}[]()/#$<>|½/&^!"\\\',;.:~',
        'alpha_lower' => 'qwertyuopasdfghjklizxcvbnm',
        'alpha_upper' => 'QWERTYUIOPASDFGHJKLZXCVBNM',
        'alpha_lower_tr' => 'güsiöç',
        'alpha_upper_tr' => 'GÜSIÖÇ',
        'space' => ' ',
        'numeric' => '0123456789',
        'special' => '+?_-{}[]()/#$<>|½/&^!"\\\',;.:~'
    );
    
    if(!is_array($allowed_patterns))
        return;
    
    if($trim)
        $data = trim($data);
        
    if(!$data)
        return;
    
    $count = count($allowed_patterns);
    $charset = '';
    // tdundaralp@gmail.com
    for( $t = 0 ; $t < $count ; $t++ )
    {
        $charset .= $patterns[$allowed_patterns[$t]];
    }
    
    $charset .= $additional_chars;
    
    $count = strlen($data);
    for($t=0;$t<$count;$t++)
    {
        if(!strstr($charset,substr($data,$t,1)))
        {
            return;
        }
    }
    
    return $data;
}

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