![]() ![]() Can you please check my algorithm and tell me what’s wrong. For loop not continuing after first iteration. To subtract 1 from a variable, or decrement use the - operator: x- Which. I need to subtract 10 from a value until its below ten and then use it outside of the loop but the value doesnt seem to change. This would cause a infinite loop and for example be a possible entry point for a denial of service attack. ![]() Multiply the subtract from data by (-1) and then sum () the both amount then you will get subtracted amount. Loop PHP - For Loop PHP - For Each PHP - Do While PHP - POST & GET PHP. Like for instance, the current load balance is 1000 and the ticket price is 54, the difference must be 946 but I always got 622 which is 7x from the ticket price. SELECT s.ITEM, SUM (m.QTY) - s.QTY AS result FROM stockbal s INNER JOIN mastertable m ON m.ITEM s.ITEM GROUP BY s.ITEM, s.QTY. Note that I grant php does not work that way, and that it is unlikely to change, but within the context of for loops as a language-independent construct, this is the correct understanding, as evidenced by every answer-poster suggesting the declaration of a counter variable prior to the for loop for this purpose. I subtract the current load balance and ticket price but I always got a wrong result. If you run the above code, the number 18 will be printed out onto the page. echo 20 - 2 In the PHP code above, we subtracted 2 from 20. You will likely find yourself using for loops a lot in PHP programming, so they are incredibly important to understand. Hello everyone! I have this issue since yesterday and I can’t still figure it out. To subtract numbers in PHP, we can use the Subtraction Arithmetic Operator. The for loop continued to iterate until it no longer matched the condition within the for loops parenthesis.
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