PHP代码从5.2升级到5.4

Question

我有一个用PHP 5.2编写的旧网站，但是升级PHP版本后，该网站现在停止工作。

这是我得到的错误：

PHP Fatal error:  Call-time pass-by-reference has been removed in /var/www/vhosts/crm/httpdocs/libs/formval.class.php on line 212, referer: http://crm/admin/index.php

来自formval.class.php的代码

            // Are there any functions to run?
        if ($functions != '') {

            // Put the functions into an array.
            $functionArray = explode(',', $functions);

            // Loop through and run the functions.
            for ($i = 0; $i < sizeof($functionArray); $i++) {

                $functionName = $functionArray[$i];

                switch ($functionName) {

                    case 'isNumber':
                        $callFunction = $this->isNumber($data, &$errorMsg);
                        break;

                    case 'isNumberND':
                        $callFunction = $this->isNumberND($data, &$errorMsg);
                        break;

                    case 'isNotZero':
                        $callFunction = $this->isNotZero($data, &$errorMsg);
                        break;

                    case 'isValidEmail':
                        $callFunction = $this->isValidEmail($data, &$errorMsg);
                        break;

                    case 'isValidDate':
                        $callFunction = $this->isValidDate($data, &$errorMsg);
                        break;

                    case 'isValidPassword':
                        $callFunction = $this->isValidPassword($data, &$errorMsg);
                        break;

                    default:
                        $callFunction = TRUE;

                }

这是第212行：

$callFunction = $this->isNumber($data, &$errorMsg);

因为这是在Plesk 11.5上运行的，所以它不允许我使用apache模块安装5.2，仅安装CGI或FastCGI，但都不能使该站点运行。 有任何想法吗？

Answer 1

问题是您不能通过引用来调用，使用

$callFunction = $this->isNumber($data, $errorMsg);

代替

$callFunction = $this->isNumber($data, &$errorMsg);

另外，您还必须更改isNumber函数声明，从

public function isNumber($data, $errorMsg)

至

public function isNumber($data, &$errorMsg)