Prime Number In PHP

 //Prime Number: 5 to 250 task...

$prime = 250;

    echo "<h1 style=color:red;text-align:center;background-color:black;font-size:50px;>Prime Number: 5 to 250...</h1>";

//ye loop 5 se lekar 250 tak chalayega.

for ($i=5; $i <= $prime; $i++) { 

    $isprime = true;

//ye loop i divided by 2 aur if statement reminder nikalega 0 hua to false aur 1 hua to true.

for ($j=2; $j <= ($i/2); $j++) { 

    if ($i % $j == 0) {  //aur if statement reminder nikalega 0 hua to false aur 1 hua to true.

        $isprime = false;

    }

}

    if ($isprime == true) {

        echo "This is Prime Number: ".$i.'<br>';

    }

}

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Task

while loop 5 to 250.

$a = 5;

while ($a <= 250) 

{

     $c = $a-1;

     $d = $a+1;

     echo $c.", ".$a.", ".$d.'<br>';

     $a++;

}

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 Task 

for loop 5 to 250 

$x = 5;

for ($i=$x; $i <= 250 ; $i++) {

         $num = 0; 

     for ($j=1; $j < $x ; $j++) { 

         if ($x % $j==0) {

             $num++;

         }

     }

     if ($num <= 2) {

         echo $x."<br>";

     }

     $x++;

}

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STAR PATTEN Using For Loop

for ($i=1; $i <= 10; $i++) { 

     for ($j=1; $j <= $i; $j++) { 

         echo "*";       

     }

     echo "<br>";

 }