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run code in 300+ PHP versions simultaneously
<?php $string = <<<TEXT BUILD THE ULTIMATE BRAWLER Not a full line of UPPERCASE TEXT BATTLE THROUGH EPIC LEGO THEMES text text TEXT; echo preg_replace_callback('/([A-Z-]+(?: [A-Z]+)+)(\r\n|\r|\n)/', function($matches) { return "[b]{$matches[0]}[/b]"; }, $string);
Output for git.master, git.master_jit, rfc.property-hooks
[b]BUILD THE ULTIMATE BRAWLER [/b] Not a full line of [b]UPPERCASE TEXT [/b] [b]BATTLE THROUGH EPIC LEGO THEMES [/b] text text

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