Print To Php Error Log
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Php Error_log Array
Overflow Questions Jobs Documentation Tags Users Badges Ask Question x Dismiss Join the Stack Overflow Community Stack Overflow is a community of php.ini error log 6.2 million programmers, just like you, helping each other. Join them; it only takes a minute: Sign up How to print a debug log? up vote 58 down vote favorite 19 I'd like to debug http://php.net/manual/en/function.error-log.php this 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 usual print/printf seems to go to HTML output not the console. I have apache server executing the PHP code. php debugging logging share|improve this question edited Jun 29 '14 at 15:34 Martin Thoma 14.8k17122238 asked May 21 '11 at 3:51 eugene 8,3391994202 Is your http://stackoverflow.com/questions/6079492/how-to-print-a-debug-log script running in a web browser or in a console (aka parsed using php.exe rather than apache/iis)? –danielrsmith May 21 '11 at 3:56 You should look at this question, has a bit of useful logging code: stackoverflow.com/questions/5769537/… –Ben May 21 '11 at 3:57 you can use echo $variable –Ibu May 21 '11 at 3:59 what language are you comming from? Just so you php is very different then other compiled languages –Ibu May 21 '11 at 4:02 1 @lbu: indeed.. I didn't expect, printf question would get this many upvotes... –eugene Oct 24 '14 at 12:44 add a comment| 14 Answers 14 active oldest votes up vote 104 down vote accepted A lesser known trick is that mod_php maps stderr to the Apache log. And, there is a stream for that, so file_put_contents('php://stderr', print_r($foo, TRUE)) will nicely dump the value of $foo into the Apache error log. share|improve this answer answered May 21 '11 at 4:17 chx 6,81032464 3 +1: Was completely unaware of that. Nice :) –Demian Brecht May 21 '11 at 4:30 + oned for mentionning that, btw you can also set the value of error_log to 'php://stdout' when debugging a console app and have the error messages appear straight to con
here for a quick overview of the site Help Center Detailed answers to any questions you might have Meta Discuss http://stackoverflow.com/questions/19486547/how-to-properly-print-variable-to-error-log-php the workings and policies of this site About Us Learn more about Stack Overflow the company Business Learn more about hiring developers or posting ads with us Stack Overflow Questions Jobs Documentation Tags Users Badges Ask Question x Dismiss Join the Stack Overflow Community Stack Overflow is a community of 6.2 million programmers, just like you, helping php error each other. Join them; it only takes a minute: Sign up How to properly print variable to error log php up vote 3 down vote favorite Im trying to properly print a variable to the error log so that i know if my mysql query worked but it doesn't print to my file error log.log. i set everything print to php up below i set errors to true and told it the file to print to but it doesn't print anything at all query("SELECT business_id, BusinessName, date, post". "FROM WolfeboroC.posts". "JOIN WolfeboroC.users ON users.recid = posts.business_id". "WHERE city= '$city' && state='$state' ". "ORDER BY date DESC LIMIT 0, 500") ) { while($record = $query->fetch_assoc()) { I defined results here its a mysql query that fetches a bunch of info from the database and returns it in results $results[] = $record; } $query->close(); } echo json_encode($results); This is where i try to print the variable to the error log file error_log(print_r($results)); ?> php share|improve this question edited Oct 21 '13 at 5:02 Phil 70.9k684105 asked Oct 21 '13 at 4:58 user2354835 2615 I doubt PHP has permissions to