最近使用TCPDF 遇到 writeHTML / writeHTMLCell 整個變成空白的 Bug
經自行 Debug 後發現問題出於 getHtmlDomArray(),
部分 preg_replace 會錯誤把部分字元替代錯誤, 最後導致整個HTML Block無效
官方解決前暫時解決方法是 Comment 掉 tcpdf.php 內這兩行
$html = preg_replace('/<([^\>\/]*)>[\s]/', '<\\1> ', $html); // preserve some spaces
$html = preg_replace('/[\s]<\/([^\>]*)>/', ' </\\1>', $html); // preserve some spaces
此問題已經回報到 TCPDF SorceForge Bug Tracker
==================================
Recently I encountered a bug in TCPDF, which cause writeHTML / writeHTMLCell output blank when certain characters are inputted.
After debugging by myself, I found that the problem is caused by getHtmlDomArray(),
some preg_replace code will mess up whole HTML block if certain character appeared.
Meanwhile, it can be workaround by commenting out these two lines in tcpdf.php
$html = preg_replace('/<([^\>\/]*)>[\s]/', '<\\1> ', $html); // preserve some spaces
$html = preg_replace('/[\s]<\/([^\>]*)>/', ' </\\1>', $html); // preserve some spaces
This bug have been reported to TCPDF SorceForge Bug Tracker
Affected version: 6.2.9
Bug Tracker: https://sourceforge.net/p/tcpdf/bugs/1065/