Pass the unnamed function as a parameter to the | using use (...) the unnamed function sees the variable above

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Pass the unnamed function as a parameter to the | using use (...) the unnamed function sees the variable above | PHP

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Pass the unnamed function as a parameter to the | PHP

last updated: 5 December 2024

PHP

// The ReadTextFile function contains 2 parameters:
// 1st peremeter is $arr (array)
// 2nd peremeter is $myFunction (function)
function GoInArray($arr, $myFunction)
{
for($i=0; $i < count($arr); $i++)
$myFunction($arr[$i]); // For each element, I call $myFunction
}

$my_arr1 = array(1, 6, 7, 8);

// The second parameter is to pass the unnamed function
GoInArray($my_arr1, function($item) {echo $item;} );

Example 2 Using use (..), the unnamed function sees the variable above

PHP

// The ReadTextFile function contains 2 parameters:
// 1st peremeter is $arr (array)
// 2nd peremeter is $myFunction (function)
function GoInArray($arr, $myFunction)
{
for($i=0; $i < count($arr); $i++)
$myFunction($arr[$i]); // For each element, I call $myFunction
}

$my_arr1 = array(1, 6, 7, 8);
$my_text = "Hello!";

// The second parameter is to pass the unnamed function
GoInArray($my_arr1, function($item) use ($my_text) {echo "$my_text $item";} );

Using use, an unnamed function sees the variable $my_text

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