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ini_get

(PHP 4, PHP 5)

ini_get — Gets the value of a configuration option

Описание

string ini_get ( string $varname )

Returns the value of the configuration option on success.

Список параметров

varname

The configuration option name.

Возвращаемые значения

Returns the value of the configuration option as a string on success, or an empty string on failure or for null values.

Примеры

Example#1 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;
}

?>

Результатом выполнения данного примера будет что-то подобное:

display_errors = 1 register_globals = 0 post_max_size = 8M post_max_size+1 = 9 post_max_size in bytes = 8388608

Примечания

Note: When querying boolean values 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.

Note: When querying memory size values 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.

Смотрите также


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