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ini_get
Gets the value of a configuration option
(PHP 4, PHP 5)
string ini_get ( string varname )
Return Values
Returns the value of the configuration option as a string on success, or
an empty string on failure or for null values.
Examples
Example 1845. A few ini_get() examples
<?php
/*
Our php.ini contains the following settings:
display_errors = On
register_globals = Off
post_max_size = 8M
*/
echo 'display_errors = ' . ini_get('display_errors') . "\n";
echo 'register_globals = ' . ini_get('register_globals') . "\n";
echo 'post_max_size = ' . ini_get('post_max_size') . "\n";
echo 'post_max_size+1 = ' . (ini_get('post_max_size')+1) . "\n";
echo 'post_max_size in bytes = ' . return_bytes(ini_get('post_max_size'));
function return_bytes($val) {
$val = trim($val);
$last = strtolower($val{strlen($val)-1});
switch($last) {
// The 'G' modifier is available since PHP 5.1.0
case 'g':
$val *= 1024;
case 'm':
$val *= 1024;
case 'k':
$val *= 1024;
}
return $val;
}
?>The above example will output something similar to:
display_errors = 1
register_globals = 0
post_max_size = 8M
post_max_size+1 = 9
post_max_size in bytes = 8388608
Notes
A boolean ini value of off will be returned as an
empty string or "0" while a boolean ini value of on will
be returned as "1".
The function can also return the literal string of INI value.
Many ini memory size values, such as
upload_max_filesize, are
stored in the php.ini file in shorthand notation.
ini_get() will return the exact string stored in the
php.ini file and NOT its integer
equivalent. Attempting normal arithmetic functions on these values
will not have otherwise expected results. The example above shows one
way to convert shorthand notation into bytes, much like how the PHP
source does it.