This Preg_Match is for use number,lowercase,capital letters,graphic accent and add the min and max character. Also you can add global, multi line, insensitive. You have to write a associative array for example: ['NUMBERS'=>'0-9','SIZECHARS'=>'6,12'] output:'/[0-9]{6,8}+$/'.

Simple Fuction For PregMatch

<?php
/**
 * Created by Schenier Aldair Lopez
 * Date: 12/12/18
 * Time: 18:30
 *
 */

function pregMatch(array $diccionario,$variable){
    if (empty($diccionario['SPACE'])){
        $diccionario['SPACE'] = ' ';
    }
    if (empty($diccionario['SIZECHARS'])){
        $diccionario['SIZECHARS'] = '6,20';
    }
    if (empty($diccionario['abc'])){
        $diccionario['abc']='a-z';
    }
    if (empty($diccionario['ABC'])){
        $diccionario['ABC']='A-Z';
    }
    $preg =  '/['.'{NUMBERS}'.''.'{abc}'.''.'{ABC}'.''.'{TILDES}'.''.'{SPACE}'.']'.'{{SIZECHARS}}'.'+$/'.'{MORE}'.'';
    if (!array_key_exists('NUMBERS',$diccionario)){
        $preg = str_replace('{NUMBERS}','',$preg);
    }
    if (!array_key_exists('abc',$diccionario)){
        $preg = str_replace('{abc}','',$preg);
    }
    if (!array_key_exists('ABC',$diccionario)){
        $preg = str_replace('{ABC}','',$preg);
    }
    if (!array_key_exists('TILDES',$diccionario)){
        $preg = str_replace('{TILDES}','',$preg);
    }
    if (!array_key_exists('SPACE',$diccionario)){
        $preg = str_replace('{SPACE}','',$preg);
    }
    if (!array_key_exists('SIZECHARS',$diccionario)){
        $preg = str_replace('{SIZECHARS}','',$preg);
    }if (!array_key_exists('MORE',$diccionario)){
        $preg = str_replace('{MORE}','',$preg);
    }
    foreach ($diccionario as $key => $value){
        $preg = str_replace('{'.$key.'}',$value,$preg);
    }
    if (preg_match($preg,$variable)){
        return true;
    }else{
        return false;
    }
}

?>