Ternary operator not working in echo

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November 17th, 2012, 03:30 PM

Perceptus

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PHP5 - Ternary operator not working in echo

My code

PHP Code:


		
			
echo "         <a href='?OB=name&oba='" . ($order == 'DESC' ? 'ASC' : 'DESC') . "><img src='images/name.gif'></a>";

Produces a link for

?OB=name&oba=

Why doesn't it return the DESC or ASC?

November 17th, 2012, 03:51 PM

gw1500se

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I think it has to do with operator precedence since you are using strings. Try this:

PHP Code:


		
			
echo "         <a href='?OB=name&oba='" . (($order == 'DESC') ? 'ASC' : 'DESC') . "><img src='images/name.gif'></a>";

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November 17th, 2012, 04:03 PM

Jacques1

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Hi,

no, those paranthesis are unnecessary, since "==" already has a higher precedence than the ternary operator.

Perceptus, are you sure that's the exact output of the "echo" statement? Because what the statement should and does output (on my machine) is

Code:

<a href='?OB=name&oba='DESC><img src='images/name.gif'></a>

Maybe it's because of the invalid single quote after the "oba=" that you don't see the full URL.

November 17th, 2012, 04:45 PM

Perceptus

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Thanks Jacques1,

New code works

PHP Code:


		
			
echo "         <a href='?OB=name&oba=" . ($order == 'DESC' ? 'ASC' : 'DESC') . "'><img src='images/name.gif'></a>";

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