PHP Line Number constant

PHP Line Number constant 2007-04-05 08:18pm

PHP has a constant for the current line number, and the current filename. Useful for debugging as you can pepper them through your code and see where it stops working.

Code:

print __FILE__ . " " . __LINE__;

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Replies

Blaster_Boy 2008-08-28 09:30am - No Email - Logged IP: 98.172.25.66

Thanks for this tip.
Here is a way to automatically pepper this throughout your code:

cat program.php | sed 's/;$/; print __FILE__ . " O.K. to line: " . __LINE__ . "\\n";/' > program-debug.php

Enjoy!

Steven 2008-09-10 01:45pm - No Email - Logged IP: 78.143.208.155

Fantastic. Now I have an include in all my pages, which can be called with: debug(); It's great!

function debug(){
echo "File:".__FILE__ . "
Line:" .__LINE__."
";
}

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