69 lines
2.1 KiB
PHP
69 lines
2.1 KiB
PHP
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<?php
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class H5PRequirements {
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// Set warning threshold (32 MB)
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const UPLOAD_SIZE_WARNING_THRESHOLD = 33554432;
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public static function validatePrerequisites() {
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$results = array();
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// Need mbstring
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if (!extension_loaded('mbstring')) {
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$results[] = (Object)array (
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'mandatory' => true,
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'message' => 'H5 need the mbstring php extension',
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'url' => 'https://h5p.org/h5p-php-core-prerequisites#mbstring'
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);
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}
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if (!class_exists('ZipArchive')) {
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$results[] = (Object)array (
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'mandatory' => true,
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'message' => 'Your PHP version does not support ZipArchive',
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'url' => 'https://h5p.org/h5p-php-core-prerequisites#ziparchive'
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);
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}
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// Check upload sizes:
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$maxFileUploadSize = self::getMaxFileUploadSize();
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if ($maxFileUploadSize < self::UPLOAD_SIZE_WARNING_THRESHOLD) {
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$results[] = (Object)array (
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'mandatory' => false,
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'message' => "Your webserver's file upload settings makes it impossible to upload files larger than {$maxFileUploadSize} bytes. This might be a problem when trying to upload e.g. video files",
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'url' => 'https://h5p.org/h5p-php-core-prerequisites#fileuploadsize'
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);
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}
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// Other things to check might be:
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// - php version
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// - possible to run http get/post from server to h5p.org?
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// - extension_loaded('openssl') ?
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return $results;
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}
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private static function getMaxFileUploadSize () {
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$max_upload = self::humanSizeTobytes(ini_get('upload_max_filesize'));
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//select post limit
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$max_post = self::humanSizeTobytes(ini_get('post_max_size'));
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//select memory limit
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$memory_limit = self::humanSizeTobytes(ini_get('memory_limit'));
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// return the smallest of them, this defines the real limit
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return min($max_upload, $max_post, $memory_limit);
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}
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private static function humanSizeTobytes($val) {
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$val = trim($val);
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$last = strtolower($val[strlen($val)-1]);
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switch($last)
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{
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case 'g':
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$val *= 1024;
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case 'm':
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$val *= 1024;
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case 'k':
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$val *= 1024;
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}
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return $val;
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}
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}
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