Notice that Beginning was output because it was (Web site hosting)
Notice that Beginning was output because it was before the function call, but End was not because the fatal error halted the script execution. You can suppress the fatal error calls by putting an ampersand in front of the function call, like so: @fatalerror(). This suppresses the error, but the script still halts its execution. As of PHP4 the default error reporting does not show E_NOTICE errors. However, you may want to show them during development. Enabling E_NOTICE errors for debugging can warn you about possible bugs or bad programming practices. For example, you might use something such as $row[variable], but actually it is better to write this as $row[ variable ] because PHP will try and treat variable as a constant. If, however, it isn t a constant, PHP assumes it to be a string for the array. You can set error reporting by simply putting error_reporting(number), where number is the constant value in the table shown earlier in the chapter, in your PHP page. If you don t know at what level your error reporting is set, you can simply run the error_reporting() function without any arguments, like this: By default, all error handling is handled by PHP s built-in error handler, which tells you the error and displays the message associated with that error. The message displays the error type, the error message, the filename, and the line number where the error occurred. You may have noticed an error similar to this one in a previous code snippet: Warning: Wrong parameter count for str_replace() in c:FoxServwwwerrorhandlingerror1.php on line 8 Usually, letting PHP generate its own errors is fine, but with complicated applications you may want to catch the errors so you can do something specific with the error, such as notifying an administrator so he or she can look into the problem further. Try It Out Creating a Custom Error Handler You will now create a custom error handler to catch the errors and display a more friendly error message. 1. Edit the script used in the previous examples like this:
Page Error
; echo Errors have occurred while executing this page. Contact the ; echo administrator . to report errors
; echo Information Generated
; echo Error Type: $error_type
; 263 Handling and Avoiding Errors
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