PHP Sum Up the value of textbox -

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How to submit and display the value of the text box For example, the value of the textbox is 1 and 2 and the second text box 3 will display. Please help me solve the problem. Thanks ~ 

  $ name = $ row ['name']; $ Data2 = mysql_query ("Choose * FROM tblstockmgt WHERE ItemName = '$ name'") or die (mysql_error ()); While ($ row2 = mysql_fetch_array ($ data2)) {resonant " gt; & lt; / td & gt; }

just create a varabile $ total and always incrase After this, and loop, type the value into a text box: 

  $ total = 0; While ($ row2 = mysql_fetch_array ($ data2)) {resonant " Input  gt; & lt; / td & gt; $ Total + = $ line 2 ['value']; }? & Gt; & Lt; / TR & gt; & Lt; TR & gt; & Lt; Td> Total: & lt; Input type = "textbox" name = "total" value = "& lt ;? php echo $ total ;? gt;" / & Gt; & Lt; / TD & gt; & Lt; / TR & gt; Avoid SQL injection, avoid your wires in your query. 
  
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     Use pdo instead of mysqli or mysql function, because mysql functions are disliked. 
     
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