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| Look for these Key Clues |
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| failed to open stream: No such file or directory | Whatever file is being called, it either does not exist or the pathway to the file was incorrectly entered. |
| file.php on line xxx | The error being encountered is in file.php specifically on line xxx |
| Fatal error: Call to undefined function | The function being called is not supported. It may be turned off, commented out, or you may need to upload the library/script for it. |
| Parse error: parse error, unexpected | Syntax error, usually resulting from a missing semi-colon ; , or close parenthesis ) at the end of the line of code, or from the end of the preceeding line of code. This may also occur if there are whitespaces. |
| Warning: fsockopen(): unable to connect to | fopen is not enabled. Many hosting companies have closed fopen due to a recent security risk. It is also possible that the DNS for that website can not be found by the internet at this time or it is refusing the connection. |
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| Real Life examples Explained |
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| PHP Warning: Cannot modify header information - headers already sent by (output started at /htdocs/internet/netquery/nquser.php:10) | Headers are being sent more than once. Line 10 in the file nquser.php is sending out another set of headers. This can also be caused by whitespaces after or before the opening and closing php tags. |
| PHP Warning: session_start() [function.session-start]: Cannot send session cache limiter - headers already sent (output started at /htdocs/internet/netquery/nquser.php:10) | Line 10 in the file nquser.php is trying to send out a second set of headers. |
| PHP Fatal error: Allowed memory size of 159863725 bytes exhausted | Memory limit was reached. This can be changed in the php.ini file with memory_limit |
| Parse error: syntax error, unexpected T_STRING, expecting ',' or ';' in /htdocs/internet/netquery/nquser.php on line 29 | There is a syntax error on line 29 of the file nquser.php. The start and end of echo had a " (double quote), where PHP syntax uses a ' (single quote), instead. A " is only used within the command, ' is to start and end. example: echo ' <a href="howtointernet.net/netquery">Web Tech Page</a>'; |
| PHP Fatal error: [Zend Optimizer] Zend Optimizer 3.2.0 is incompatible
with XCache 1.2.0 in Unknown on line 0 | The two applications- Zend Optimizer and XCache are either not compatible or incorrectly configured together |
| Premature end of script headers: /htdocs/internet/netquery/index.php | It is not able to finish reading the headers supplied on the file index.php |
| Fatal error: Maximum execution time of 0 seconds exceeded in /htdocs/internet/netquery/index.php on line 51 | Look to change the max_execution_time = and/or max_input_time = value. 0 can be set for unlimited. |
| Warning: main(): Failed opening 'nquser.php' for inclusion (include_path='') in /htdocs/internet/netquery/index.php on line 61 | The include being called could not be found because it does not exist or could not be opened due to permissions. |
| Warning: main(start.php): failed to open stream: No such file or directory in /htdocs/internet/netquery/index.php on line 73 | Either the file does not exist, or the code has the wrong path to that file. The file it is unable to find is start.php and the line of code defining the path to that file is on line 73 in the file index.php. |
| Warning: main(/home/htdocs/internet/netquery/file.php) [function.main]: failed to open stream: No such file or directory in /home/htdocs/internet/netquery/index.php on line 110 | Again the directory or file being called either does not exist or the pathway to the intended file is not properly set. The requested file to open is file.php the path listed for that file is /home/htdocs/internet/netquery/file.php and the line of code calling that file is on index.php line 110. |
| Fatal error: Call to unsupported or undefined function page_open() | This usually occurs when using an older version of PHP script. If the PHP support on your server is a newer version, it is not fully backwards compatible much of the syntax has changed. It will also occur when a php function is not supported. It may be set to Off or commented out. You can check by using a phpinfo scipt. <?php
phpinfo();
?> You may also just need to install the library for that function. |
| Fatal error: Call to undefined function mysql_connect() | The function is not currently installed. The mysql.so extension library does not come with the PHP or MySQL distributions. It must be installed separately. |
| Warning: fsockopen(): unable to connect to howtointernet.net in /home/htdocs/internet/netquery/file.php on line 63 | fopen is not enabled. Many hosting companies have closed fopen due to a recent security risk. It is also possible that the DNS for that website can not be found by the internet at this time or the server being called is refusing the connection. If you have access to your php.ini file check for allow_url_fopen =
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Warning: require() [function.require]: URL file-access is disabled in the server configuration in /home/htdocs/open.php on line 12
Warning: require(http://howtointernet.com/includes/play.php) [function.require]: failed to open stream: no suitable wrapper could be found in /home/htdocs/open.php on line 12
Fatal error: require() [function.require]: Failed opening required 'http://howtointernet.com/includes/play.php' (include_path='.:/usr/lib/php:/usr/local/lib/php') in /home/htdocs/open.php on line 12
| fopen is not enabled. Many hosting companies have closed fopen due to a recent security risk. If you have access to your php.ini file check for allow_url_fopen = and allow_url_include = |
| Warning: fsockopen() [function.fsockopen]: unable to connect to localhost:25 (Connection timed out) in /home/htdocs/sendmail.php on line 173
| Port 25 may be closed, many places use a different port for mail servers. The email may not be on localhost (127.0.0.1), it may be on another server. This is especially true of hosting providers that use a server farm type of set up. The mail server may be down/turned off. |