php - How to limit the length of the title to 20 characters? -

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How to limit the title to 20 characters?

I am a newbie, thank you =) 

     
 
 
 Use the function of PHP:  
  echo & lt; li & gt; & lt; a href =" '. $ RSS- & gt; Link [$ i]. "" Target = "_ blank" & gt; Substr ($ rss- & gt; Title [$ i], 0, 20). '& Lt; / A & gt; & Lt; / Li & gt; ';

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