how much a php coder make?

I'm a little lost here...what is sources of income for a php coder? minimum amount a php coder could make?

depends on how skilled they are

Your question is too vague but you can use this site to have an average reference of what you need to know and how much people are whiling to offer:
http://careers.stackoverflow.com/jobs?searchTerm=php&location=

Usually: 3rd world country coder: $20/hr 1st world advanced: $20->$35 1st world pro: $40+ Usually it ends up being that the coders from places like India, Pakistan, Phillipines, China etc. will all bid at rates which are enticing but end up producing shit. Money through quantity. Also, living expenses are cheaper. A tip though: Don't price yourself at what others are. Price yourself at what you think you're worth.

Yes, its really different.

F.i.:
In Slovakia i made about 1800 Euro brutto monthly as a very skilled PHP coder
In Germany i made about 3300 Euro brutto monthly as just a Javascript programmer.

it really depends on the talent and what exactly are you doing - custom project for clients or developing and selling your own software..

It depend on the skills. Exact can't be told

Depends who you want to work for too, ie: enterprise company, government, small startup.

If you want to be one of the best at PHP spend countless hours practicing it. Learn to read production level code, maybe contribute to some massive open source projects to get a handle on how professional programmers operate. Everything from following a naming/indentation standard to requesting your patches for review before commiting to tree. Learning something like CVS, version change control and maintaining a code base. Of course mastering the language, and knowing OOP principles.

I think for a highly,highly skilled programmer, you will have a salary, but you will also do work on the side. Your knowledge of SEO/BHW will eventually pay off, yes you might work for a fortune 500 by day for 60-80k/year but whats to stop you from running your own websites by night for further profit?

It is also very interesting to work for a startup company. It is risky, you take lower pay in trade for shares in the company. If your product takes off you can get rich beyond your wildest dreams, but it can also flop too, or be somewhere in the middle. You will "wear more hats" as they say in a startup. I worked in one as a junior, under the senior dev/JV partner who was the CTO of the company. There were between 5-8 people working at a given time. We hosted our own servers,had a server closet, so the CTO or us the juniors would not just code, but build hardware, install OSs and hosting software, communicate with our net supplier, code, research and more. I found it fun to have more responsibility, in a huge company they try and strip you of responsibility and make your job very targetted.

its depend on experience

Everything matters, people around the world are making thousands of dollars just with coding stuffs, some with good talent are making nothing.

Also depends on exposure and marketing you do. Quality matters and most important factor which many coder lacks is communication with their clients.