PHP error_reporting

Example #1 error_reporting() examples

<?php

// Turn off all error reporting
error_reporting(0);

// Report simple running errors
error_reporting(E_ERROR | E_WARNING | E_PARSE);

// Reporting E_NOTICE can be good too (to report uninitialized
// variables or catch variable name misspellings ...)
error_reporting(E_ERROR | E_WARNING | E_PARSE | E_NOTICE);

// Report all errors except E_NOTICE
// This is the default value set in php.ini
error_reporting(E_ALL ^ E_NOTICE);

// Report all PHP errors (see changelog)
error_reporting(E_ALL);

// Report all PHP errors
error_reporting(-1);

// Same as error_reporting(E_ALL);
ini_set('error_reporting', E_ALL);

?>

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php error message – Warning: Cannot modify header information

First solution:

change the configuration of php.ini as below:

output_buffering=4096(or higher).

Second solution:

From php source code, don’t modify any data(like cookies, Locaton) in header after output html code.

Thrid solution:

Use output buffering :
<?php ob_start(); ?>
… HTML codes …
<?php
… PHP codes …
header (“Location: ….”);
ob_end_flush();
?>

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