How to print a debug log?

Question

I\'d like to debug some PHP code, but I guess printing a log to screen or file is fine for me.

How should I print a log in PHP code?

The u

Answer 1

I have used many of these, but since I usually need to debug when developing, and since I develop on localhost, I have followed the advice of others and now write to the browser's JavaScript debug console (see http://www.codeforest.net/debugging-php-in-browsers-javascript-console).

That means that I can look at the web page which my PHP is generating in my browser & press F12 to quickly show/hide any debug trace.

Since I am constantly looking at the developer tools for debugger, CSS layout, etc, it makes sense to look at my PHP loggon there.

If anyone does decide to us that code, I made one minor change. After

function debug($name, $var = null, $type = LOG) {

I added

$name = 'PHP: ' . $name;

This is because my server side PHP generates HTML conatining JavaScript & I find it useful to distinguish between output from PHP & JS.

(Note: I am currently updating this to allow me to switch on & off different output types: from PHP, from JS, and database access)

Answer 2

You can use:

<?php
echo '<script>console.log("debug log")</script>';
?>

Answer 3

I use cakephp so I use:

$this->log(YOUR_STRING_GOES_HERE, 'debug');