Detailed explanation to fix the error in printing the current page in PHP

Detailed explanation and correction of the error in printing the current page in PHP

<p><input type="button" name="print" value="预览并打印" onclick="preview()" id="pt">  
<a href="?index" style="">继续查询</a></p>

When I made the query system, everything was normal, but I found an error every time I printed it. The current page cannot be printed. I thought about it. Is there something wrong with my expression?

Ever since, I asked Du Niang and Uncle Gu for advice, and found out that there was a problem with my expression. The correct expression should be like this.

<p><input type="button" name="print" value="预览并打印" onclick="javascript:window.print()" id="pt">  
<!--  //修正打印本页错误 -->
<a href="?index" style="">继续查询</a></p>

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