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    <p>Here's what I can see just by looking at the code:</p> <p>If think you have the parameters to <code>Explode</code> in the wrong order. The separator is the second parameter in the function to which you linked. So you should write:</p> <pre><code>Arry1 := Explode(RangeFrom, '.'); Arry2 := Explode(RangeTo, '.'); </code></pre> <hr> <p>You are leaking memory by not freeing the arrays returned by the <code>Explode</code> function. Delphi is different from PHP in that you often have to manage the memory of objects that you create.</p> <hr> <pre><code>a2 := Arry1[0]; b2 := Arry1[1]; c2 := Arry1[2]; d2 := Arry1[3]; </code></pre> <p>These should be <code>Arry2</code> rather than <code>Arry1</code>.</p> <hr> <p>You should convert the strings to integers up front. So declare them like this:</p> <pre><code>a1, b1, c1, d1, a2, b2, c2, d2: Integer; </code></pre> <p>and write the assignments like this:</p> <pre><code>a1 := StrToInt(Arry1[0]); b1 := StrToInt(Arry1[1]); //etc. etc. </code></pre> <hr> <pre><code>while ($d2 &gt;= $d1 || $c2 &gt; $c1 || $b2 &gt; $b1 || $a2 &gt; $a1) </code></pre> <p>translates to:</p> <pre><code>while ((d2 &gt;= d1) or (c2 &gt; c1) or (b2 &gt; b1) or (a2 &gt; a1)) </code></pre> <hr> <p>Inside the while loop you want code like this:</p> <pre><code>if d1 &gt; 255 then begin d1 := 1; inc(c1); end; </code></pre> <hr> <p>Converting the 4 values back to an IP address is easiest with the <code>Format</code> function:</p> <pre><code>ListBox1.Items.Add(Format('%d.%d.%d.%d', [a1, b1, c1, d1])); </code></pre> <hr> <p>You have a mis-understanding of what <code>StrToInt</code> does it is a function that receives as input a string and returns an integer. When you write:</p> <pre><code>StrToInt(d1)+1 </code></pre> <p>you are not modifying the variable <code>d1</code> which is just an input variable. That issue disappears when you make the other changes I describe, but I wanted to point it out for your future benefit.</p> <hr> <p>You may also want to force a periodic repaint of the list box so that you can see what is happening.</p> <hr> <p>Put it all together and you have this:</p> <pre><code>var Arry1, Arry2: TStringList; RangeFrom, RangeTo: string; Count: Integer; a1, b1, c1, d1, a2, b2, c2, d2: Integer; begin RangeFrom := Edit1.Text; RangeTo := Edit2.Text; Arry1 := Explode(RangeFrom, '.'); try a1 := StrToInt(Arry1[0]); b1 := StrToInt(Arry1[1]); c1 := StrToInt(Arry1[2]); d1 := StrToInt(Arry1[3]); finally Arry1.Free; end; Arry2 := Explode(RangeTo, '.'); try a2 := StrToInt(Arry2[0]); b2 := StrToInt(Arry2[1]); c2 := StrToInt(Arry2[2]); d2 := StrToInt(Arry2[3]); finally Arry2.Free; end; Count := 0; while ((d2 &gt;= d1) or (c2 &gt; c1) or (b2 &gt; b1) or (a2 &gt; a1)) do begin if d1 &gt; 255 then begin d1 := 1; inc(c1); end; if c1 &gt; 255 then begin c1 := 1; inc(b1); end; if b1 &gt; 255 then begin b1 := 1; inc(a1); end; ListBox1.Items.Add(Format('%d.%d.%d.%d', [a1, b1, c1, d1])); inc(Count); if Count mod 1000=0 then begin ListBox1.Repaint; ListBox1.TopIndex := ListBox1.Items.Count-1; end; inc(d1); end; end; </code></pre>
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    1. POWho can help me to convert this small PHP code to Delphi?
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    1. USDavid Heffernan
    1. USDavid Heffernan
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    1. COThank yo very much ! It help me a lot :) I'll make these changes.
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    2. CO@Beny I've updated and extended the answer. I hope it helps. I've not run the code and I've only quickly checked it and so it may not work. But I'm sure you'll be able to resolve any minor slips I made!
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    3. COThank you David, your translation works. I've just a problem with Explode, "EConvertError" about the "." bewteen numbers. I'll try to solve it by mysself :D Best.
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