如何使mPDF 6.1与PHP 7.1.5一起使用

本文介绍了如何使mPDF 6.1与PHP 7.1.5一起使用的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！ 问题描述

使用PHP 5.6在WAMP堆栈上开发，然后转移到LAMP 7.1.5 一切正常，除了mPDF 6.1.0如下所示:

Developed on on a WAMP stack with PHP 5.6, then transferred to LAMP 7.1.5 Everything is working OK except for mPDF 6.1.0 which is giving the following:

Warning: A non-numeric value encountered in /var/sites/s/example/php_libs/vendor/mpdf/mpdf/mpdf.php on line 30648 Warning: A non-numeric value encountered in /var/sites/s/example/php_libs/vendor/mpdf/mpdf/mpdf.php on line 17074 Warning: A non-numeric value encountered in /var/sites/s/example/php_libs/vendor/mpdf/mpdf/mpdf.php on line 17075 Warning: A non-numeric value encountered in /var/sites/s/example/php_libs/vendor/mpdf/mpdf/mpdf.php on line 17093

我尝试了升级到PHP7.1和M​​PDF会显示错误-在第30648行遇到一个非数字值，但尚未解决.

I tried the solutions mentioned at Upgrade to PHP7.1 and MPDF show error - A non-numeric value encountered at line 30648 but that hasn't fixed it.

推荐答案

编辑mpdf.php，第89行，替换:

Edit mpdf.php, line 89, replace:

$errorlevel = error_reporting($errorlevel & ~E_NOTICE);

具有:

$errorlevel = error_reporting($errorlevel & ~(E_NOTICE|E_WARNING));

原因: stackoverflow/a/42044413/8284401