如何使mPDF 6.1与PHP 7.1.5一起工作

Question

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，它提供以下内容：

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

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

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

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

我尝试了Upgrade to PHP7.1 and MPDF show error - A non-numeric value encountered at line 30648中提到的解决方案但尚未修复它。

Answer 1

编辑mpdf.php，第89行，替换：

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

使用：

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

原因：https://stackoverflow.com/a/42044413/8284401