  PHP ( )
  


    .     .    .




1)

     PHP

1.1  

   5  7.     .

1. <?php

2. $a = 5;

3. $b = 7;

4. $c = $a + $b;

5. $d = $a*$b;

6. echo $c, $d;

7. ?> 

   4  6.    .

1. <?php

2. $a = 4;

3. $b = 6;

4. $c = $a*$a + $b*$b;

5. echo $c;

6. ?> 

   3, 5, 8.    .

1. <?php

2. $a = 3;

3. $b = 5;

4. $c = 8;

5. $d = ($a + $b + $c)/3

6. echo $d;

7. ?> 

   x = 2,y = 6  z = 9.  (x+1)4?2(z?2x^2+y^2)

1. <?php

2. $x = 2;

3. $y = 6;

4. $z = 9;

5. $a = ($x+1)*4  2 ($z  2*$x*$x+$y*$y);

6. echo $a

7. ?> 

    $a = 4, $b = 8, $c = 3.  

         .

1. <?php

2. $a = 4;

3. $b = 8;

4. $c = 3;

5. $d = ($a +$b)/$c;

6. $r = ($b+$c)/$a;

7. $f = ($a + $c)/$b;

8. echo $d,$r,$f;

9. ?> 

   17  54.   40%     84% 

 .

1. <?php

2. $a = 17;

3. $b = 54;

4. $c = 0,4*17 + 0,84*54;

5. echo $c;

6. ?> 

  .    .

1. <?php

2. $var = 578; //  

3. $var .= ' ; //     

4. echo $a = $var[2] + $var[1] + $var[0]; //   

5. //   

6. ?> 

1.2.  

  15.    10,     100,  

 30.

1. <?php

2. $a = 15;

3. if ($a>10)

4. {$a = $a + 100};

5. else

6. {$a = $a  30};

7. echo $a

8. ?> 

   8.   ,     2 , 

  3 .

1. <?php

2. if ($number / 2 == ceil($number / 2))

3. {

4. $number = $number / 2;

5. }

6. else

7. {

8. $number = $number *3;

9. }

10.

echo $number;

11. 

?> 

 .     50,     ,  

   10   30,   ,    

 ""

1. <?php

2. $a = ee; //   $a, , 45

3. if ($a > 50) {

4. echo $b=pow($a,2);

5. }

6. elseif ($a > 10 & $a < 30) {

7. echo 0;

8. }

9. else {

10. echo "";

11.

}

12. 

?> 

   $a = 15, $b = 4.    .

1. <?php

2. $a = 15;

3. $b = 4;

4. if ($a > $b)

5. {echo $a};

6. else

7. {echo $b };

8. ?> 

   $a = 19, $b = 143.  '',     100,

  ''

1. <?php

2. $a = 19;

3. $b = 143;

4. if ($b  $a = 100 )

5. {echo "No" };

6. else

7. {echo "Yes" };

8. ?> 

   .  '',      

 20,   ''.

1. <?php

2. $a = 15;

3. $b = 30;

4. if ($b  $a > 20)

5. {echo "No" };

6. else

7. {echo "Yes"};

8. ?> 

      ,   

   .

1.3.   

    .    .

1. <?php

2. if ($a = 1) {echo Monday};

3. if ($a = 2) {echo Tuesday};

4. if ($a = 3) {echo Wednesday};

5. if ($a = 4) {echo Thursday};

6. if ($a = 5) {echo Friday};

7. if ($a = 6) {echo Saturday};

8. if ($a = 7) {echo Sunday};

9. else

10. {echo " "}

11. 

?> 

   .    80 ,  

', ',  '!'.

1. <?php

2. if (0 < $years <= 80) {echo };

3. else

4. {echo ", "};

5. ?> 

      (,  

),       ,     

().   ,    

   400.      10%,   ,

  12%,   .       5%,  

.

1. <html>

2. <head>

3. <meta charset="utf-8" />

4. <title> </title>

5. </head>

6. <body>

7.

8.

9. <?php

10.

echo '<pre>';

11.

print_r($_POST);

12.

echo '</pre>';

13.

if (isset($_POST['hero']))

14.

{

15.

if($_POST['hero'] == 1)

16.

{

17.

if(isset($_POST['b']))

18.

{

19.

echo"    ". ($_POST['a']*400*1.12*0.95);}

20.

else{echo"    ". ($_POST['a']*400*1.12);}

21.

}

22.

elseif( $_POST['hero'] == 2){

23.

if(isset($_POST['b'])){

24.

echo"   ". ($_POST['a']*400*1.1*0.95);}

25.

else{echo"  ".($_POST['a']*400*1.1);}

26.

}

27.

elseif($_POST['hero'] == 3){

28.

if(isset($_POST['b'])){

29.

echo"   ". ($_POST['a']*400*0.95);}

30.

else{echo"Pocc  ".($_POST['a']*400);}

31.

}

32.

}

33.

?> 

34.

<form method="post">

35.



36.

<p><select name="hero"><option>    </option> 37.

<option value="1"></option>

38.

<option value="2"></option>

39.

<option value="3"></option>

40.

</select></p>

41.

<p><b>  ?</b></p>

42.

<input type="text" name="a" />

43.

<p><b>    ?</b></p>

44.

<input type="checkbox" name="option" value="b"><Br> 45.

<p><input type="submit" value=""></p>

46.

</form>

47.



48.



49.

</body>

50.

</html>

2)   PHP

2.1 

    ', ', ''  '!'.    

 ', !'.

1. <?php

2. //  ', !':

3. $arr = [', ', '', '!'];

4. echo $arr[0].$arr[1].$arr[2];

5. ?> 

 ', '    0,  ,     

   $arr[0].

    ''    $arr[1],  $arr[2]  

 '!'.     ''       (', ',

''  '!')     : $arr[0].$arr[1].$arr[2],    

  echo.

.     :     ', ',

''  '!'.     $text  ', !',  

     .

1. <?php

2. $arr = [', ', '', '!'];

3. $text = $arr[0].$arr[1].$arr[2];

4. /*

5.

  $text    ', !'. 

6.

   :

7. */

8. echo $text;

9. ?> 

  [', ', '', '!'].      (

    )    ', ' (  

 ', ' 




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