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run code in 200+ php & hhvm versions
Bugs & Features
<?php echo preg_replace_callback( '#\d+#', 'incr', '123abc456def789' ); function incr($args){ return 1 + (int)$args[0]; }
based on SBM22
Output for 4.3.0 - 7.1.7
124abc457def790