$re = '/\|move\|p([12])a:\s+([^|]+)\|([^|]+)/m';
$str = '|move|p2a: Urshifu|Wicked Blow|p1a: Clefable
|move|p1a: Clefable|Stealth Rock|p2a: Jirachi
|move|p2a: Jirachi|Stealth Rock|p1a: Slowbro
|move|p2a: Jirachi|U-turn|p1a: Slowbro
|move|p1a: Slowbro|Teleport|p1a: Slowbro
|move|p1a: Dragapult|Shadow Ball|p2a: Starmie
|move|p2a: Togekiss|Air Slash|p1a: Excadrill|[miss]
|move|p1a: Excadrill|Rapid Spin|p2a: Amoonguss
|move|p2a: Amoonguss|Spore|p1a: Tangrowth
|move|p1a: Tangrowth|Knock Off|p2a: Amoonguss
|move|p2a: Amoonguss|Sludge Bomb|p1a: Tangrowth
|move|p2a: Amoonguss|Spore|p1a: Excadrill
|move|p2a: Togekiss|Flamethrower|p1a: Excadrill
|move|p1a: Excadrill|Iron Head|p2a: Togekiss
|move|p2a: Cinderace|Pyro Ball|p1a: Slowbro
|move|p2a: Cinderace|U-turn|p1a: Slowbro
|move|p1a: Slowbro|Teleport|p1a: Slowbro
|move|p2a: Urshifu|U-turn|p1a: Clefable
|move|p1a: Clefable|Thunder Wave|p2a: Cinderace
|move|p2a: Cinderace|Pyro Ball|p1a: Slowbro
|move|p1a: Slowbro|Slack Off|p1a: Slowbro
|move|p2a: Cinderace|U-turn|p1a: Slowbro
|move|p1a: Slowbro|Teleport|p1a: Slowbro
|move|p1a: Crawdaunt|Crunch|p2a: Amoonguss
|move|p2a: Amoonguss|Giga Drain|p1a: Crawdaunt
|move|p1a: Crawdaunt|Crunch|p2a: Cinderace
|move|p2a: Urshifu|U-turn|p1a: Tangrowth
|move|p1a: Tangrowth|Earthquake|p2a: Amoonguss
|move|p2a: Amoonguss|Spore|p1a: Tangrowth
|move|p1a: Tangrowth|Earthquake|p2a: Amoonguss
|move|p2a: Amoonguss|Spore|p1a: Tangrowth
|move|p1a: Excadrill|Earthquake|p2a: Amoonguss
|move|p1a: Excadrill|Earthquake|p2a: Jirachi
|move|p2a: Urshifu|Wicked Blow|p1a: Excadrill
|move|p2a: Urshifu|Wicked Blow|p1a: Slowbro
|move|p2a: Urshifu|Wicked Blow|p1a: Clefable
|move|p1a: Clefable|Moonblast|p2a: Urshifu';
preg_match_all($re, $str, $matches, PREG_SET_ORDER, 0);
// Print the entire match result
var_dump($matches);
Please keep in mind that these code samples are automatically generated and are not guaranteed to work. If you find any syntax errors, feel free to submit a bug report. For a full regex reference for PHP, please visit: http://php.net/manual/en/ref.pcre.php