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Magento. OnBlockToHtml Before-After
In magento there are 2 events:
core_block_abstract_to_html_before
core_block_abstract_to_html_after
They are called every time when toHtml method is called. What I want is to echo to output some valuable data, BUT I get following error:
HEADERS ALREADY SENT
So is there any way to append to output?
Magento. OnBlockToHtml Before-After
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