TYPO3 Core

/**

* Returns the maximum upload size for a file that is allowed. Measured in KB.

* This might be handy to find out the real upload limit that is possible for this

* TYPO3 installation. The first parameter can be used to set something that overrides

* the maxFileSize, usually for the TCA values.

*

* @param int the number of Kilobytes (!) that should be used as the initial Limit, otherwise $TYPO3_CONF_VARS['BE']['maxFileSize'] will be used

* @return int the maximum size of uploads that are allowed

*/

public static function getMaxUploadFileSize($localLimit = 0) {

// don't allow more than the global max file size at all

$t3Limit = intval($localLimit > 0 ? $localLimit : $GLOBALS['TYPO3_CONF_VARS']['BE']['maxFileSize']);

// as TYPO3 is handling the file size in KB, multiply by 1024 to get bytes

$t3Limit = $t3Limit*1024;

// check for PHP restrictions of the maximum size of one of the $_FILES

$phpUploadLimit = ini_get('upload_max_filesize');

if (stripos($phpUploadLimit, 'G')) {

$phpUploadLimit = intval($phpUploadLimit)*1024*1024*1024;

} else if (stripos($phpUploadLimit, 'M')) {

$phpUploadLimit = intval($phpUploadLimit)*1024*1024;

} else if (stripos($phpUploadLimit, 'K')) {

$phpUploadLimit = intval($phpUploadLimit)*1024;

} else {

$phpUploadLimit = intval($phpUploadLimit);

}

// check for PHP restrictions of the maximum $_POST size

$phpPostLimit = ini_get('post_max_size');

if (stripos($phpPostLimit, 'G')) {

$phpPostLimit = intval($phpPostLimit)*1024*1024*1024;

} else if (stripos($phpPostLimit, 'M')) {

$phpPostLimit = intval($phpPostLimit)*1024*1024;

} else if (stripos($phpPostLimit, 'K')) {

$phpPostLimit = intval($phpPostLimit)*1024;

} else {

$phpPostLimit = intval($phpPostLimit);

}

// if the total amount of post data is smaller (!) than the upload_max_filesize directive,

// then this is the real limit in PHP

$phpUploadLimit = ($phpPostLimit < $phpUploadLimit ? $phpPostLimit : $phpUploadLimit);

// is the allowed PHP limit (upload_max_filesize) lower than the TYPO3 limit?, also: revert back to KB

return round($phpUploadLimit < $t3Limit ? $phpUploadLimit : $t3Limit)/1024;

}

if ($maxFileSize > 0) {

$this->maxUploadFileSize = t3lib_div::getMaxUploadFileSize();