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create code fences with backticks ` or tildes ~
```
like so
``` -
add language identifier to highlight code
```python
def function(foo):
print(foo)
``` - put returns between paragraphs
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lang-bash
test.php:<?php print shell_exec('echo $PATH'); ?>' Does it show a PATH at all? Is yourpython3.6` in that path? If either answer is no, you'll need to specify the full path to/where/ever/you/have/python3.6test.phpfile to include the full path topython3.6in your PHP code. Possibly the full path totest.pyalso.