Hi, Here are patches to use Brian Shire's optimizations (applied by Ilia to 5.2 the other day) in a couple more places, and for HEAD. In Unicode mode, concat_function() is up to 20%+ faster! (Probably because zend_make_unicode_zval() calls TSRMLS_FETCH(); so not so much with non-ZTS I guess.)
Also removed a few strlen() calls that I noticed when looking at is_numeric_string's usage awhile ago. :-) http://realplain.com/php/misc_optimizations.diff http://realplain.com/php/misc_optimizations_5_2.diff Matt
