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  9. Writing PHP Error

Writing PHP Error

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30 May 2016 16:09 #4075 by support
Replied by support on topic Writing PHP Error
Maybe because you have use $client instead of $Client ? AFAIK, variable names are case sensitive in PHP.

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30 May 2016 15:56 #4074 by pburgos
Writing PHP Error was created by pburgos
According to an example in another post i have the following code:

<html>
<head><t-itle>OPC</title></head>
<body>
<?php
// Create EasyOPC-DA component
$Client = new COM("OpcLabs.EasyOpc.DataAccess.EasyDAClient");

// Read item value and display it
print $Client->ReadItemValue("","Kepware.KEPServerEX.V5","Test.My_device.Tag1");
print $client->WriteItemValue("","Kepware.KEPServerEX.V5","Test.My_device.Tag1",1);
?>
</body>
</html>

I can write to the tag "Tag1" Direct from kepware, but when trying from the code above it returns this error: Fatal error: Call to a member function WriteItemValue() on null

Any ideas?

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Moderators: support
  1. Forum
  3. Discussions
  5. QuickOPC-Classic in COM
  7. Reading, Writing, Subscriptions, Property Access
  9. Writing PHP Error
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