Code reuse and functions for PHP

 '; require (' reusable.php '); Echo ' The script would end now.
';//function declaration functions My_function () {echo ' My function was called ';} My_function ()//Use parameter function create_table ($data) {echo '
 
 
  
  ";    Reset ($data);    $value =current ($data); while ($value) {echo '
  
  \ n "; $value =next ($data); } echo " 
  
 
   
 
    
". $value."
 
   

 
 
";} $my _array=array (' line one ', ' line ', ' line Three '); Create_table ($my _array);//Scope Key globalfunction fn () {Global $var    ;    $var = "Contens 2"; echo "Inside the function,\ $var =". $var. "
";} $var = "Contents 1"; FN (); echo "outside the function,\ $var =". $var. "
";///parameter reference pass and value pass: Address character &function increment (& $value, $amount =1) {$value = $value + $amount;} $a =10;echo $a. '
'; increment ($a); Echo $a. '
';//return keyword: execution function for terminating functions larger ($x, $y) {if ((!isset ($x)) | | (!isset ($y))) {echo "This function requires the numbers.
";    Return } if ($x >= $y) {echo $x. "
"; }else{echo $y. "
"; }} $a =1; $b =2.5; $c =1.9;larger ($a, $b); larger ($d, $a);//return keyword: Returns a value from function smaller ($x, $y) {if (!isset ($x)) | | (!isset ($y)))    {return false;    }else if ($x <= $y) {return $x;    }else{return $y; }}echo smaller ($a, $b). '
'; echo smaller ($d, $a). '
';//implement Recursive function Reverse_r ($str) {if (strlen ($STR) >0) {Reverse_r (substr ($STR, 1));    } Echo substr ($str, 0, 1); return;}    function Reverse_i ($STR) {for ($i =1; $i <=strlen ($STR); $i + +) {echo substr ($str,-$i, 1); } return; Reverse_r (' hello '); Echo '
'; reverse_i (' hello ');//phpinfo ();

For more details, refer to PHP manual-functions

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