Top SEM Tips » Programming

Issues Creating and Downloading File in IE from PHP

Dylan — Thu, 08 Apr 2010 17:04:21 +0000

Took a while to fix this one. The problem is you create a download button in HTML that leads to a PHP program that creates a file that Internet Explorer should download. The code works fine in Firefox just not IE.

The original code was something like:
{code type=php}
header(“Pragma: no-cache”);
header(“Expires: 0″);

header(“Content-disposition: attachment; filename=\”export.xls\”;”);
header(“Content-Type: application/vnd.ms-excel”);
{/code}
Which works in Firefox but not IE. The new code is:
{code type=php}header(“Pragma: “);
header(“Cache-Control: “);

header(“Content-disposition: attachment; filename=\”export.xls\”;”);
header(“Content-Type: application/vnd.ms-excel”);
{/code}
And that works fine.

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PHP UTF-8 and simplexml

Dylan — Wed, 22 Jul 2009 21:33:13 +0000

Recently the page checking code was breaking when used on a site. The XML returned from the supplier was being read using file_get_contents() and passed straight into simplexml_load_string() which was then kicking out a UTF-8 Encoding Error.

The way around this is to use utf8_encode() to ensure the string is encoded into UTF-8 before passing to simplexml_load_string(). In this instance my code goes like:

{code type=php}
$FileContents = file_get_contents( $URL ) ;
if ( $FileContents !== false )
{
��$xml� = simplexml_load_string( utf8_encode( $FileContents ) ) ;
}
{/code}

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PHP UTF-8 and simplexml

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jQuery – Add a default button to a page

Dylan — Mon, 29 Dec 2008 21:59:10 +0000

Normally in HTML you can add a ‘input type=”submit”‘ to a page and it acts as a default button. However this only works if the input tag is within a ‘form’. I was using AJAX and found that adding a form caused the AJAX to fail. Instead I ended up with the following code:

$(‘input’).keyup(function(e) {
//alert(e.keyCode);
if(e.keyCode == 13) {
$(‘#btnSubmit’).click() ;
}
});

This adds to all input fields a keyup function that checks for the enter key and if found calls the click function on the button I want to use as the default button – in this case it’s an input button called ‘btnSubmit’.

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jQuery Automatic Trim of Input Fields

Dylan — Tue, 23 Dec 2008 16:59:52 +0000

Really common task with a really easy solution

$(function()
{
$(“input”).change( function() { $(this).attr(“value”, $.trim( $(this).attr(“value”) ) ) });
});

This attaches a function to the ‘change’ event of all tags. When the input field is changed it uses the built in ‘trim()’ function of jquery to trim off whitespace.

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Save HTML Table to Excel using jQuery

Dylan — Fri, 07 Nov 2008 18:47:08 +0000

After a few hours work looking into this, this turned out really easy to implement using jQuery and server side PHP programming as follows:

On the client side the following HTML code needs adding to the page (note this is older code – for newer code follow link at bottom):

Note – variables used above – ReportTable is the id of the table you want to save and datatodisplay is a hidden variable used to post the table to the server.

The jQuery commands were added to the form’s onsubmit event but could easily be in your $(function(){}); fuction

The hard part here was getting all of the

HTML code. The standard jQuery .html() command gets the innerHTML and was cutting off the

HTML code. Getting all the HTML code was accomplished using the code $(“#datatodisplay”).val( $(“

”).append( $(“#ReportTable”).eq(0).clone() ).html() ) which effectively gets the outerHTML of the named HTML object (in this case the table we want to save to excel).

On the server side create a file called’SaveToExcel.php’ and add the following code:

Updated: April 8, 2010 – modified to add fix for crappy IE download bug.
Update: September 11, 2011 – new version of jquery save to excel javascript code at http://www.topsemtips.com/2011/09/jquery-save-to-excel-ii/

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Save HTML Table to Excel using jQuery

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