Error Handling And Logging Functions
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Error Handling Functions In Php
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PHP Manual Function Reference .NET Apache APC Arrays Aspell BC math bcompiler Bzip2 Calendar CCVS Classes/Objects Classkit ClibPDF COM Crack ctype CURL Cybercash CyberMUT Cyrus IMAP Date/Time DB++ http://www.nusphere.com/kb/phpmanual/ref.errorfunc.htm dba dBase DBM dbx Direct IO Directories DOM DOM XML enchant Errors and Logging Exif Expect fam FDF Fileinfo filePro Filesystem Filter Firebird/InterBase Firebird/Interbase (PDO) FriBiDi FrontBase FTP Function handling GeoIP https://www.sitepoint.com/error-handling-in-php/ gettext GMP gnupg gopher hash http Hyperwave Hyperwave API ibm_db2 ICAP iconv id3 IIS Functions Image IMAP Informix Informix (PDO) Ingres II IRC Gateway Java JSON kadm5 LDAP libxml Lotus Notes error handling LZF Mail mailparse Math MaxDB MCAL mcrypt MCVE Memcache mhash Mimetype Ming (flash) Misc. mnoGoSearch MS SQL Server MS SQL Server (PDO) Msession mSQL Multibyte String muscat MySQL MySQL (PDO) mysqli Ncurses Network Newt NSAPI Object Aggregation Object overloading OCI8 ODBC ODBC and DB2 (PDO) OGG/Vorbis openal OpenSSL Oracle Oracle (PDO) Output Control OvrimosSQL Paradox Parsekit PCNTL PCRE PDF PDO PHP Options/Info error handling and POSIX POSIX Regex PostgreSQL PostgreSQL (PDO) Printer Program Execution PS Pspell qtdom radius Rar Readline Recode RPMReader runkit Satellite SDO SDO DAS XML SDO-DAS-Relational Semaphore SESAM Session PgSQL Sessions shmop SimpleXML SNMP SOAP Sockets spl SQLite SQLite (PDO) ssh2 Statistics Streams Strings SWF Sybase TCP Wrappers tidy Tokenizer Unicode URLs Variables handling Verisign Payflow Pro vpopmail W32api WDDX win32ps win32service xattr xdiff XML XML-RPC XMLReader xmlwriter XSL XSLT YAZ YP/NIS Zip Zlib enchant_dict_suggestdebug_backtraceLast updated: Tue, 19 Sep 2006 XXXII. Error Handling and Logging FunctionsIntroduction These are functions dealing with error handling and logging. They allow you to define your own error handling rules, as well as modify the way the errors can be logged. This allows you to change and enhance error reporting to suit your needs.
With the logging functions, you can send messages directly to other machines, to an email (or email to pager gateway!), to system logs, etc., so you can selectively log and monitor the most important parts of your applications and websites. The error reporting functions allow you to customiWeb Dev @ Microsoft SEO By WooRank Books Courses Screencasts Newsletters Versioning Shop Forums Advertise Contribute Contact Us Our Story 995kSubscribers 132kFollowers 80kFollowers PHP Article Error Handling in PHP By Sneha Heda November 09, 2011 Errors are the most common event a developer faces when programming. Errors can be categorized as syntactical, run-time, or logical: missing the semicolon at the end of a statement is an example of a syntax error; trying to connect to a database when the server is down is an example of a run-time error; providing incorrect data to a variable is an example of a logic error. To help reduce the number of errors in your code, and to mitigate their effects, proper error handling is essential in your web application. This article is a crash course in PHP error handling. You'll learn about PHP's built-in error reporting levels, and how to handle errors with custom error handlers and exception handling. PHP Error Reporting Levels All errors and warnings should be logged. Based on the severity of an error, notifications should be sent out to other systems/teams. So that you can better gauge its severity, PHP provides several built-in error levels to describe the nature of an error. Each level is represented by an integer value and named constant which can be used by the programmer. The table below is taken from the official PHP documentation and shows some of the different levels. The levels can be masked together with bit-operators to include or subtract them from PHP's configuration. For example, E_ALL|E_STRICT enables all errors and warnings with the addition of E_STRICT (necessary in versions of PHP prior to 5.4). PHP provides a few configuration directives related to logging and displaying errors. Their values are generally different depending on whether the system is in a development or a production environment. This table shows some of the error-related directives. The configuration directives can be set either in php.ini, in a web server configuration file (httpd.conf or .htaccess file), or at run-time in your script using the ini_set() function. Read the documentation for more information on the directives and how/where to set them. Creating Custom Error Handlers It's also good practice not to display raw errors to the end user. Errors that are displayed should be abstracted with friendly, custom error messages. PHP not