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Use php Create a file to write a program of 30 city name and populations Using...

Use php
Create a file to write a program of 30 city name and populations
Using two files
Print using associative array

Output should be like
Cities:
Name. Population
Daka. 13 millions

engineering   Computer-Science   
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Homework Answers

Answer #1

1st code : a form to add data to files

code:

<!DOCTYPE html>
<html>
<head>
   <title></title>
</head>
<body>
   <form method="post" action="">

       <input type="text" name="cities" placeholder="city name"> <br><br>
       <input type="text" name="population" placeholder="population in millions"> <br><br>
       <button type="submit" name="submit">submit</button>
   </form>
</body>
</html>

<?php

if (isset($_POST['submit']))
{
   $v1=$_POST['cities'];
   $v2=$_POST['population'];
   $f1=fopen("country.txt","a");
   $f2=fopen("population.txt","a");
   fwrite($f1,$v1." ");
   fwrite($f2,$v2." ");
   fclose($f1);
   fclose($f2);
}
?>

output:

city name population in millions submit

2nd code: to read files .. store in associative arrays and display it .. i have taken 5 values .. it will work for 30 as well

code:

<?php
$f1=fopen("country.txt","r"); //open file in read mode
$f2=fopen("population.txt","r"); // open file in read mode
$data=array(); // declaring a associative array
while (! feof($f1)) // inserting values in associative arrays
{
   $data+=array(fgets($f1)=>fgets($f2)); // this will continue untill one of the file reaches its end
}

fclose($f1); // closing the files
fclose($f2);
echo ("cities"."<br><br>");
?> <table border="1px"> <?php // creating a table
//echo ("name".'&nbsp&nbsp&nbsp'."populations"."<br><br>");
echo ("<tr><th>"."city"."</th>"."<th>"."population"."</th></tr>"); // printing values
foreach ($data as $key => $value)
{
   if ($value != 0)
   {
       echo"<tr><td>".$key."</td>"."<td>".$value."</td></tr>"; // printing values in associative array
   }
   //echo $key.'&nbsp&nbsp&nbsp'.$value."&nbsp millions"."<br>";
}
?></table><?php

?>
output:

cities city population kolkata |10 dhaka50 kabul 25 mumbai 19 khulna 5 34

thumbs up if u like and comment for any issues

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