php - Summing All Values Between a Number Range -


How can I add all the numbers of numbers using PHP?

For example: 

  1-5 (1 + 2 + 3 + 4 + 5) = 15   
 Need to use  array_sum  or array variation?   
 
 
 Multiple choices, here is 1.  
  $ start = 1; $ End = 5; $ Sum = 0; For {$ sum = $ i; ($ I = $ start; $ i & lt; = $ end; $ i ++) } $ sum;

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