Some useful PHP helper functions

helpers.php

<?php

// Don't just COPY everything to your codebase without looking the need of these functions. 
// Helpers functions can be a cancer if you don't have any idea where to put and why.

const DS = DIRECTORY_SEPARATOR;

function echoln($str) {
    echo $str . PHP_EOL;
}

function echobr($str) {
    echo $str . '<br />';
}

function isValidMd5($md5 = '') {
    return preg_match('/^[a-f0-9]{32}$/', $md5);
}

function toDateBr($date) {
    return implode("-", array_reverse(explode("/", $date)));
}

function delete_all_between($beginning, $end, $string) {
    $beginningPos = strpos($string, $beginning);
    $endPos = strpos($string, $end);
   
    if ($beginningPos === false || $endPos === false) {
        return $string;
    }

    $textToDelete = substr($string, $beginningPos, ($endPos + strlen($end)) - $beginningPos);

    return str_replace($textToDelete, '', $string);
}

function dateTimeBrToEn($date) {
    $d = explode(" ", $date);
    $concat = '';
    
    if (isset($d[1])) {
        $concat = ' '.$d[1];
    } 

    return implode("-", array_reverse(explode("/", $d[0]))) . $concat;
}

function removeAccents($str) {

    $unwanted_array = array(    
        'Š'=>'S', 'š'=>'s', 'Ž'=>'Z', 'ž'=>'z', 'À'=>'A', 'Á'=>'A', 'Â'=>'A',  'Ã'=>'A',  'Ä'=>'A', 'Å'=>'A', 'Æ'=>'A', 'Ç'=>'C', 'È'=>'E', 'É'=>'E',
        'Ê'=>'E', 'Ë'=>'E', 'Ì'=>'I', 'Í'=>'I', 'Î'=>'I', 'Ï'=>'I', 'Ñ'=>'N',  'Ò'=>'O',  'Ó'=>'O', 'Ô'=>'O', 'Õ'=>'O', 'Ö'=>'O', 'Ø'=>'O', 'Ù'=>'U',
        'Ú'=>'U', 'Û'=>'U', 'Ü'=>'U', 'Ý'=>'Y', 'Þ'=>'B', 'ß'=>'Ss', 'à'=>'a', 'á'=>'a', 'â'=>'a', 'ã'=>'a', 'ä'=>'a', 'å'=>'a', 'æ'=>'a', 'ç'=>'c',
        'è'=>'e', 'é'=>'e', 'ê'=>'e', 'ë'=>'e', 'ì'=>'i', 'í'=>'i', 'î'=>'i',  'ï'=>'i',  'ð'=>'o', 'ñ'=>'n', 'ò'=>'o', 'ó'=>'o', 'ô'=>'o', 'õ'=>'o',
        'ö'=>'o', 'ø'=>'o', 'ù'=>'u', 'ú'=>'u', 'û'=>'u', 'ý'=>'y', 'þ'=>'b',  'ÿ'=>'y'
    );

    $str = strtr($str, $unwanted_array);

    return $str;
}

function removeSpecialChars($item) {
    return preg_replace('/[\W_]/', '', $item);
}

function removeSpecialCharsUrl($str) {
    $unwanted_array = array(    
        '!', '@',  '$', '%', '',  '*', '(', ')', '?', '/', ';', ':', 
        '#', '¨', '\\', '|', '<', '>', '[', ']', '{', '}', ',', '.',
        '%', '&', '+', 'ª', 'º', '¹', '²', '³', '£', '¬', '§', '¢', '=' 
    );

    $str = str_replace($unwanted_array, '', $str);

    return $str;
}

function makeUrl($str) {
    $str = removeAccents($str);
    $str = removeSpecialCharsUrl($str);
    $str = strtolower($str);
    $str = preg_replace('/\s+\-\s+/', '-', $str);
    $str = preg_replace( '/[`^~\'"]/', null,  $str);
    $str = preg_replace('/\s+/', '-', $str);
    return iconv( 'UTF-8', 'ASCII//TRANSLIT', $str);
}

/**
 * Credit card validation check in PHP
 *
 * Source: http://rosettacode.org/wiki/Luhn_test_of_credit_card_numbers
*/
function luhnCheck($num) {
    $str = '';
    
    foreach(array_reverse(str_split($num)) as $i => $c) {
        $str .= (($i % 2) ? ($c * 2) : $c);
    }

    return array_sum(str_split($str)) % 10 == 0;
}

function formatarCpfCnpj($cnpj_cpf) {
    
    if (strlen(preg_replace("/\D/", '', $cnpj_cpf)) === 11) {
        $response = preg_replace("/(\d{3})(\d{3})(\d{3})(\d{2})/", "\$1.\$2.\$3-\$4", $cnpj_cpf);
    } else {
        $response = preg_replace("/(\d{2})(\d{3})(\d{3})(\d{4})(\d{2})/", "\$1.\$2.\$3/\$4-\$5", $cnpj_cpf);
    }

    return $response;
}

function array_deep_sum($array, $field='') {
    $sum = 0;
    foreach ($array as $value) {
        $sum += $value[$field];
    }
    
    return $sum;
}

function validaCPF($cpf = null) {

    // Verifica se um número foi informado
    if(empty($cpf)) {
        return false;
    }

    // Elimina possivel mascara
    $cpf = preg_replace("/[^0-9]/", "", $cpf);
    $cpf = str_pad($cpf, 11, '0', STR_PAD_LEFT);

    // Verifica se o numero de digitos informados é igual a 11
    if (strlen($cpf) != 11) {
        return false;
    }
    // Verifica se nenhuma das sequências invalidas abaixo
    // foi digitada. Caso afirmativo, retorna falso
    else if ($cpf == '00000000000' ||
        $cpf == '11111111111' ||
        $cpf == '22222222222' ||
        $cpf == '33333333333' ||
        $cpf == '44444444444' ||
        $cpf == '55555555555' ||
        $cpf == '66666666666' ||
        $cpf == '77777777777' ||
        $cpf == '88888888888' ||
        $cpf == '99999999999') {
        return false;
        // Calcula os digitos verificadores para verificar se o
        // CPF é válido
    } else {

        for ($t = 9; $t < 11; $t++) {

            for ($d = 0, $c = 0; $c < $t; $c++) {
                $d += $cpf[$c] * (($t + 1) - $c);
            }
            $d = ((10 * $d) % 11) % 10;
            if ($cpf[$c] != $d) {
                return false;
            }
        }

        return true;
    }
}

function execInBackground($cmd) {
    if (PHP_OS_FAMILY === "Windows"){
        pclose(popen("start /B ". $cmd, "r"));
    }
    else {
        exec($cmd . " > /dev/null &");
    }
}

function describeTable($tableName) {
    return \Illuminate\Support\Facades\DB::select('DESCRIBE '.$tableName);
}

function tableColumns($tableName) {
    return array_column(describeTable($tableName), 'Field');
}

function tableTypes($tableName) {
    return array_column(describeTable($tableName), 'Type');
}

function tableColumnsWithTypes($tableName) {
    return array_combine(tableColumns($tableName), tableTypes($tableName));
}