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php generated Excel Issue

We have a php program that generates a report from the database & creates an Excel Spreadsheet. The program runs multiple times per day & has been working for over a year.

Yesterday, I made some minor changes in the logic that generates the rows under specific conditions. The program now fails in IE & Chrome. In FireFox, it works. The program is attached.

In IE & Chrome, Excel issues the message in the attached image called rpt-error-ie.jpg. When you click OK, nothing happens.

In FireFox, you get SOMETIMES the message called rpt-error-ff,jpg and SOMETIMES you get the other one.

In FireFox, in BOTH cases, if you click OK, the report opens correctly in Excel. When geneated in IE or Chrome, it DOES not do anything.

Note that the message I called rep-error-ff has occurred in ALL 3 browsers always since the beginning. Clicking OK always works.

I recognize that the message is created by Excel.

Why is this happening?
rpt-error-ie.jpg
rpt-error-ff.jpg
report1.php
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Richard Korts
Asked:
Richard Korts
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1 Solution
 
Dave BaldwinFixer of ProblemsCommented:
Compare it to your backup copy and see what has changed.  Or just restore your backup copy.
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Richard KortsAuthor Commented:
I had already restored the backup & it works. I will do a compare; but I added code so it will be different.
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Dave BaldwinFixer of ProblemsCommented:
Do you have WinMerge?  It makes the comparison task very easy.  http://winmerge.org/
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Richard KortsAuthor Commented:
WinMerge is a SUPERB tool! Found it right away.

FYI, I had put the Excel extension at "xlxs" on the new one; It was "xls" on the old (working) one.

I changed the new to xls; works like a charm!!

I guess the "marriage" between HTML "content type" & Excel is limited. As far as I know, my customer has the latest Excel; but maybe not.

Thanks & Happy New Year!
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Dave BaldwinFixer of ProblemsCommented:
You're welcome, glad to help.
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