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Very brief. Accepted answer, also nice tips :)
– MacMac
Commented Jun 23, 2010 at 13:32
Also would you mind doing a brief about multiple ternary operators within one logical statement. This will be helpful to others. +1
– RobertPitt
Commented Jun 25, 2010 at 12:41
1

@RobertPitt: the brief advice would be: don't do it! Nested ternary operators quickly become unwieldy, unintelligible, unmaintainable code.
– janmoesen
Commented Jun 25, 2010 at 12:56
+1, and I cannot help but mention that X-Forwarded-For,like other headers, is completely spoofable. You could set $ip to 127.0.0.1 simply by saying so in your header. So this code would be open to "normal" bugs and "security" vulnerabilities.
– janmoesen
Commented Jun 25, 2010 at 12:58

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Correct minor typos or mistakes
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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
for linebreak add 2 spaces at end
_italic_ or **bold**
indent code by 4 spaces
backtick escapes `like _so_`
quote by placing > at start of line
to make links (use https whenever possible)

<https://example.com>

[example](https://example.com)

<a href="https://example.com">example</a>

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