Array not working after moving to PHP 5.4

[desmod]

The array below worked fine in PHP 5.3 but it is returning empty results in PHP 5.4 What is causing it?

This is the code I am using:

$xaxis=array();
for ($i = 1; $i <= 3; $i++) {
$chachg_time = $xml->xpath("//ns:BulkData[ns:Name='ChannelChangeHistory.{$i}.ChannelChangeTime']/ns:Value");
$chachg_time = $chachg_time[0];
$xaxis[] = $chachg_time[0];
}

In PHP 5.3, I get the expected result: 

Array
(
[0] => SimpleXMLElement Object
(
[0] => 6
)

)
Array
(
[0] => SimpleXMLElement Object
(
[0] => 6
)

[1] => SimpleXMLElement Object
(
[0] => 5
)

)
Array
(
[0] => SimpleXMLElement Object
(
[0] => 6
)

[1] => SimpleXMLElement Object
(
[0] => 5
)

[2] => SimpleXMLElement Object
(
[0] => 3
)

)

However, after moving to server running PHP 5.4, I get the following empty results: 

Array
(
[0] => SimpleXMLElement Object
(
)

)
Array
(
[0] => SimpleXMLElement Object
(
)

[1] => SimpleXMLElement Object
(
)

)
Array
(
[0] => SimpleXMLElement Object
(
)

[1] => SimpleXMLElement Object
(
)

[2] => SimpleXMLElement Object
(
)

)

[cyberRobot]

Have you tried echoing the other variables to see if they contain expected values? As $chachg_time changes, for example, you could add the following to see what it contains:

 

echo '<pre>' . print_r($chachg_time, true) . '</pre>';

[desmod]

Interesting.  When I do:

$xaxis=array();
for ($i = 1; $i <= 3; $i++) {
$chachg_time = $xml->xpath("//ns:BulkData[ns:Name='ChannelChangeHistory.{$i}.ChannelChangeTime']/ns:Value");
echo '<pre>' . print_r($chachg_time, true) . '</pre>';
$chachg_time = $chachg_time[0];
$xaxis[] = $chachg_time[0];
}

In PHP 5.3 I get:

Array
(
    [0] => SimpleXMLElement Object
        (
            [0] => 2013-11-12T01:01:45.207Z
        )

)
Array
(
    [0] => SimpleXMLElement Object
        (
            [0] => 2013-11-12T02:02:45.207Z
        )

)
Array
(
    [0] => SimpleXMLElement Object
        (
            [0] => 2013-11-12T03:03:45.207Z
        )

)

In PHP 5.4 I get:

Array 
(
    [0] => SimpleXMLElement Object 
         ( 
         )
)

Array 
(
     [0] => SimpleXMLElement Object 
         ( 
         )
)

Array 
( 
      [0] => SimpleXMLElement Object 
           (
           ) 
)

Also, when I do the code below in both, PHP 5.3 or PHP 5.4

$xaxis=array();
for ($i = 1; $i <= 3; $i++) {
$chachg_time = $xml->xpath("//ns:BulkData[ns:Name='ChannelChangeHistory.{$i}.ChannelChangeTime']/ns:Value");
$chachg_time = $chachg_time[0];
echo '<pre>' .$chachg_time .'</pre>';
$xaxis[] = $chachg_time[0];
}

I get the same result:

2013-11-12T02:10:00.153Z
2013-11-12T02:15:00.153Z
2013-11-12T02:20:00.153Z