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fomrat_string() tuning - memory, speed and accuracy in cron

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skodak 2007-03-04 22:52:33 +00:00
parent 3c8dd686e0
commit 38701b6910
1 changed files with 12 additions and 7 deletions
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19
lib/weblib.php
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@ -1410,25 +1410,30 @@ function format_title($string, $plaintext=true, $courseid=null) {
function format_string ($string, $striplinks = false, $courseid=NULL ) {
global $CFG, $COURSE;
// First replace all ampersands not followed html entity code
$string = preg_replace("/\&(?![a-z0-9]{1,8};)/", "&", $string);
//We'll use a in-memory cache here to speed up repeated strings
static $strcache = false;
if ($strcache === false) {
if ($strcache === false or count($strcache) > 2000 ) { // this number might need some tuning to limit memory usage in cron
$strcache = array();
}
//init course id
if ($courseid === NULL) {
$courseid = $COURSE->id;
}
//Calculate md5
$md5 = md5($string.'<+>'.$striplinks.'<+>'.$courseid);
$md5 = md5($string.'<+>'.$striplinks.'<+>'.$courseid.'<+>'.current_language());
//Fetch from cache if possible
if(isset($strcache[$md5])) {
if (isset($strcache[$md5])) {
return $strcache[$md5];
}
// First replace all ampersands not followed html entity code
$string = preg_replace("/\&(?![a-z0-9]{1,8};)/", "&amp;", $string);
if (!empty($CFG->filterall)) {
$string = filter_text($string, $courseid);
}