How To Check Highest And Lowest Numbers In PHP

Submitted by alpha_luna on Tuesday, April 12, 2016 - 14:53.
In this tutorial, we are going to learn on How To Check Highest And Lowest Numbers In PHP. You can create this simple program using PHP Language. This program can determine the highest number and the lowest number after the user input a given value on the box. Then, click the enter button to show the result. Hope you find this useful.

HTML Form

This is the HTML form that the user input six value to the box.
  2. <h2>Highest and Lowest Number Checker in PHP</h2>
  3.  
  4. <form class="form_style" action="" method="post">
  5. <label>Value Number 1 : </label>
  6. <input type="number" class="text_style" name="value_no1" value="<?php echo $a_1; ?>" size="5" maxlength="5" autofocus="autofocus" />
  7. <br/><br>
  8. <label>Value Number 2 : </label>
  9. <input type="number" class="text_style" name="value_no2" value="<?php echo $b_1; ?>" size="5" maxlength="5"/>
  10. <br/><br>                                  
  11. <label>Value Number 3 : </label>            
  12. <input type="number" class="text_style" name="value_no3" value="<?php echo $c_1; ?>" size="5" maxlength="5"/>
  13. <br/><br>                                  
  14. <label>Value Number 4 : </label>            
  15. <input type="number" class="text_style" name="value_no4" value="<?php echo $d_1; ?>"size="5" maxlength="5"/>
  16. <br/><br>                                  
  17. <label>Value Number 5 : </label>            
  18. <input type="number" class="text_style" name="value_no5" value="<?php echo $e_1; ?>"size="5" maxlength="5"/>
  19. <br/><br />                                
  20. <label>Value Number 6 : </label>            
  21. <input type="number" class="text_style" name="value_no6" value="<?php echo $f_1; ?>"size="5" maxlength="5"/>
  22.  
  23. <br />
  24. <br/>
  25. <br />
  26.  
  27. <input type="submit" class="btn_style1" value="Enter" name="enter" />  
  28. <input type="submit" class="btn_style2" value="Reset" name="reset" />
  29. </form>

PHP Function

This is a PHP code determine the highest and lowest number by clicking the enter button.
  1. <?php
  2. if(isset($_POST['enter']))
  3. {
  4.  $six_valueAll = array($a_1,$b_1,$c_1,$d_1,$e_1,$f_1);
  5.  
  6.  $max_number =$six_valueAll[0];
  7.  $min_number = $six_valueAll[0];
  8.  
  9. foreach($six_valueAll as $key => $valueChoose){
  10. if($min_number > $valueChoose){
  11. $min_number = $valueChoose;
  12. }
  13.  if($max_number < $valueChoose){
  14. $max_number = $valueChoose;
  15. }
  16. }
  17.  
  18. $highest_number = "<b style='color:blue;'>The Highest Number is " .$max_number."</b>.<br>";
  19. $lowest_number = "<b style='color:red;'>The Lowest Number is " .$min_number." </b>.";
  20.  
  21. echo "<br><br>";
  22. echo "<div style='margin-top:-260px; margin-right:250px; float:right;'>";
  23. echo "<b>".$highest_number."</b>"."<br>";
  24. echo "<b>".$lowest_number."</b>";
  25. echo "</div>";
  26. }
  27. ?>
And, this PHP code for the reset button, to have a new entry value of numbers in the box.
  1. <?php
  3. $a_1= $_POST['value_no1'];
  4. $b_1= $_POST['value_no2'];
  5. $c_1= $_POST['value_no3'];
  6. $d_1= $_POST['value_no4'];
  7. $e_1= $_POST['value_no5'];
  8. $f_1= $_POST['value_no6'];
  9.  if(isset($_POST['reset']))
  10. {
  11. $a_1=""; $b_1=""; $c_1=""; $d_1=""; $e_1=""; $f_1="";
  12. $highest_number=""; $lowest_number="";
  13. }
  14. ?>

CSS

Also, this is our CSS style.
  1. <style type="text/css">
  2. .form_style {
  3.         width: 300px;
  4. }
  5. label {
  6.         float: left;
  7.         width: 150px;
  8.         color:blue;
  9.         font-size:18px;
  10. }
  11. h2 {
  12.         color:red;
  13. }
  14. .text_style {
  15.         font-size:18px;
  16.         width:100px;
  17.         border:red 1px solid;
  18.         text-align:center;
  19.         color:red;
  20. }
  21. .btn_style1 {
  22.         font-size:18px;
  23.         color:red;
  24.         background:azure;
  25.         border:skyblue 1px solid;
  26.         padding:5px;
  27.         width:100px;
  28.         margin-right:100px;
  29.         float:left;
  30. }
  31. .btn_style2 {
  32.         font-size:18px;
  33.         color:blue;
  34.         background:white;
  35.         border:red 1px solid;
  36.         padding:5px;
  37.         width:100px;
  38. }
  39. </style>
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Highest and Lowest Number Checker
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