Help me write regular expression of songs. I haven't figured it out for a long time.

Help me write regular expression of songs. I haven't figured it out for a long time.

$content ='
 
 

  
  
The North Face Size Chart 
  
  
Breathe deeply and slow your racing brain in the Be Calm Tank.
  
  
VaporWick technology sweeps moisture away from your skin for quick evaporation to leave you feeling spectacular.
  
  
Structured V-panel neckline.
  
  
Racerback styling allows arms complete range of movement.
  
  
Wide waistband with ruched side seams.
  
  
Eye-catching burnout design.
  
  
Logo at center back.
  
  
Sports bra not included.
  
  
73% polyester, 27% cotton.
  
  
Machine wash cold, tumble dry low.
  
  
Imported.
  
  
Measurements: 
   
 
    
Length: 25 in
 
   
  
  
Product measurements were taken using size XS. Please note that measurements may vary by size.
  
  
View This Model Measurements
 
 
';preg_match_all('/
(^/si',$content,$matches);print_r($matches);

What regular expressions can include
Extract all contents of li.
I am confused. The last array [1] should be like this.
Matches [1] [x] = Breathe deeply and slow your racing brain the Be Calm Tank.
Matches [1] [x] = VaporWick technology sweeps moisture away from your skin for quick evaporation to leave you feeling spectacular.
Matches [1] [x] = Structured V-panel neckline.
.....
Matches [1] [x] = Sports bra not supported ded.
Matches [1] [x] = 73% polyester, 27% cotton.
...
Simply put, it is to exclude

Reply to discussion (solution)

Preg_match_all ('/

(?! /Siu', $ content, $ matches );

Preg_match_all ('/

(?! /Siu', $ content, $ matches );

Jordan, but it's okay. But is there a possibility that U is not needed.

Preg_match_all ('/

(?! /Si', $ content, $ matches );

Preg_match_all ('/

(?! /Si', $ content, $ matches );
Niu, worthy of being 23rd.