史上最牛叉的正则

//替换ml
$goods_desc = $v['goods_desc'];
preg_match_all("/[0-9]mL/i",$goods_desc,$ar);
//替换ml
foreach($ar[0] as $v){
$goods_desc =  preg_replace ("/(.*)([0-9]mL)(.*)/ei", "'\\1'.strtolower('\\2').'<br>\\3'",$goods_desc);


}

//替换mm
unset($ar);
preg_match_all("/[0-9]mpa/i",$goods_desc,$ar);
foreach($ar[0] as $v){
$goods_desc =  preg_replace ("/(.*)([0-9]mpa)(.*)/ei", "'\\1'.strtolower('\\2').'<br>\\3'",$goods_desc);

}


//替换mm
unset($ar);
preg_match_all("/[0-9]mm/i",$goods_desc,$ar);
foreach($ar[0] as $v){
$goods_desc =  preg_replace ("/(.*)([0-9]mm)(.*)/ei", "'\\1'.strtolower('\\2').'<br>\\3'",$goods_desc);

} //替换kg
unset($ar);
preg_match_all("/[0-9]kg/i",$goods_desc,$ar);
foreach($ar[0] as $v){
$goods_desc =  preg_replace ("/(.*)([0-9]kg)(.*)/ei", "'\\1'.strtolower('\\2').'<br>\\3'",$goods_desc);

}

//替换kg
unset($ar);
preg_match_all("/[0-9]g/i",$goods_desc,$ar);
foreach($ar[0] as $v){
$goods_desc =  preg_replace ("/(.*)([0-9]g)(.*)/ei", "'\\1'.strtolower('\\2').'<br>\\3'",$goods_desc);

}




//替换cm
unset($ar);
preg_match_all("/[0-9]cm/i",$goods_desc,$ar);
foreach($ar[0] as $v){
$goods_desc =  preg_replace ("/(.*)([0-9]cm)(.*)/ei", "'\\1'.strtolower('\\2').'<br>\\3'",$goods_desc);

}

//替换rpm
unset($ar);
preg_match_all("/[0-9]rpm/i",$goods_desc,$ar);
foreach($ar[0] as $v){
$goods_desc =  preg_replace ("/(.*)([0-9]rpm)(.*)/ei", "'\\1'.strtolower('\\2').'<br>\\3'",$goods_desc);

}

//替换°C
unset($ar);
preg_match_all("/[0-9]°C|&#176;C/i",$goods_desc,$ar);
foreach($ar[0] as $v){
$goods_desc =  preg_replace ("/(.*)([0-9]°C|&#176;C)(.*)/ei", "'\\1\\2<br>\\3'",$goods_desc);

}


//替换W
unset($ar);
preg_match_all("/[0-9]W/i",$goods_desc,$ar);
foreach($ar[0] as $v){
$goods_desc =  preg_replace ("/(.*)([0-9]W)(.*)/ei", "'\\1\\2<br>\\3'",$goods_desc);

}



//替换L
unset($ar);
preg_match_all("/[0-9]L/i",$goods_desc,$ar);
foreach($ar[0] as $v){
$goods_desc =  preg_replace ("/(.*)([0-9]L)(.*)/ei", "'\\1\\2<br>\\3'",$goods_desc);

}


//替换V
unset($ar);
preg_match_all("/[0-9]V/i",$goods_desc,$ar);
foreach($ar[0] as $v){
$goods_desc =  preg_replace ("/(.*)([0-9]V)(.*)/ei", "'\\1\\2<br>\\3'",$goods_desc);

}





//替换大写开头
unset($ar);
preg_match_all("/[a-z]+[A-Z]/",$goods_desc,$ar);

foreach($ar[0] as $v){

$goods_desc =  preg_replace ("/(.*)([a-z]+[A-Z])(.*)/e", "'\\1'.substr('\\2',0,1).'<br>'.substr('\\2',1,1).'\\3'",$goods_desc);

}




//替换大写开头
unset($ar);
preg_match_all("/[0-9]+[A-Z]/",$goods_desc,$ar);

foreach($ar[0] as $v){

$goods_desc =  preg_replace ("/(.*)([0-9]+[A-Z])(.*)/e", "'\\1\\2<br>\\3'",$goods_desc);

}








//替换大写开头
unset($ar);
preg_match_all("/\)[A-Z]/",$goods_desc,$ar);

foreach($ar[0] as $v){

$goods_desc =  preg_replace ("/(.*)(\)[A-Z])(.*)/e", "'\\1'.substr('\\2',0,1).'<br>'.substr('\\2',1,1).'\\3'",$goods_desc);

}