I've been following the example for PHP error handling using
simplexml_load_file as show in this example:
http://www.ibm.com/developerworks/library/x-simplexml.html
To test my PHP code, I put in a bogus URL, which failed and the PHP
script caught it allowing me to control it in the program.
But when the actual URL's server is down, PHP gives errors about it
and aborts the script. The error handling isn't caught by this method.
I had a PHP script running for months without a problem and I guess it
had just been lucky until recently not to encounter any network
problems.
The CRON was nice enough to e-mail root errors from the script that it
complained about:
PHP Warning: simplexml_load_file(): php_network_getaddresses:
getaddrinfo failed: Temporary failure in name resolution in
blahblah.php on line 17
PHP Warning: simplexml_load_file(http://example.com): failed to open
stream: Connection timed out in blahblah.php on line 17
PHP Warning: simplexml_load_file(): I/O warning : failed to load
external entity "http://example.com"; in blahblah.php on line 17
My impression is that the PHP program encountered these errors and
simply aborted and didn't give my code a chance to execute.
Is the technique in this article wrong? What can be done to make this
more robust cause networks won't be up and running all the time. Thanks!
David Roth
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