What does the line cause?

What does the line cause?

jansch_94jansch_94 Posts: 1Questions: 0Answers: 0
edited December 2010 in General
Hi @all,

in this example:
http://datatables.net/examples/data_sources/server_side.html
is at the bottom this line:
$sOutput = substr_replace( $sOutput, "", -1 );

What does the line cause?
When I removed it, no longer works in Internet Explorer..

Greetings Jan
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