<h1><?php echo $GLOBALS['translate']['About'] ?></h1>
Notice: Undefined index: About in page.html on line 19
Is it possible to "catch" an undefined index so that I can create it (database lookup) & return it from my function and then perform echo ?
The easiest way to check if a value has been assigned is to use the isset method:
if(!isset($GLOBALS['translate']['About'])) {
$GLOBALS['translate']['About'] = "Assigned";
}
echo $GLOBALS['translate']['About'];
You can check if this particular index exists before you access it. See the manual on isset(). It's a bit clumsy as you have to write the variable name twice.
if( isset($GLOBALS['translate']['About']) )
echo $GLOBALS['translate']['About'];
You might also consider changing the error_reporting value for your production environment.
that wouldn't be the right thing to do. i would put effort into building the array properly. otherwise you can end up with 1000 db requests per page.
also, you should check the array before output, and maybe put a default value there:
<h1><?php echo isset($GLOBALS['translate']['About'])?$GLOBALS['translate']['About']:'default'; ?></h1>
try something like:
if ( !isset($GLOBALS['translate']['About']) )
{
$GLOBALS['translate']['About'] = get_the_data('About');
}
echo $GLOBALS['translate']['About'];
Yes. Use isset to determine if the index is defined and then, if it isn't, you can assign it a value.
if(!isset($GLOBALS['translate']['About'])) {
$GLOBALS['translate']['About'] = 'foo';
}
echo "<h1>" . $GLOBALS['translate']['About'] . "</h1>";
), missing ;, missing open/close tags...
You need to define your custom error handler if you want to catch Undefined index
set_error_handler('exceptions_error_handler');
function exceptions_error_handler($severity, $message, $filename, $lineno) {
if (error_reporting() == 0) {
return;
}
if (error_reporting() & $severity) {
throw new ErrorException($message, 0, $severity, $filename, $lineno);
}
}
try{
}catch(Exception $e){
echo "message error";
}
