<?php
$data = <<<TEXT
みかん,愛媛産,1,和歌山産,4,海外産,3,
メロン,北海道産,1,大阪産,2,
レモン,海外産,1,広島産,2,愛媛産,3,和歌山産,4,
TEXT;
 
$in_array = explode("\n", $data);
$re = "/([^,]+,)/";
for ($i = 0 ; $i < count($in_array) ; ++$i) {
	preg_match_all($re, $in_array[$i], $tmp, PREG_SET_ORDER);
//print_r($tmp);
//print_r(count($tmp));
	for ($j = 1 ; $j < count($tmp) ; $j += 2) {
		$out_array[] = $tmp[0][0] . $tmp[$j][0] . $tmp[$j + 1][0];
	}
}
 
//print_r(count($out_array));
print_r($out_array);
 
$result = implode("\n", $out_array);
print_r($result);
 
?>
 
 

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