I know the =>
symbol is used when constructing arrays in php. But in javascript, you can use the symbol to shorten a function like this:
var materials = [
'Hydrogen',
'Helium',
'Lithium',
'Beryllium'
];
console.log(materials.map(material => material.length));
// expected output: Array [8, 6, 7, 9]
where material
would be the input of the function and material.length
the return value.
Is there's an equivalent in php?
In php7.4 arrow functions are implemented according to this rfc https://wiki.php.net/rfc/arrow_functions_v2
Sample here: https://3v4l.org/ddooc , watch the results depending on php version.
$array = ['string1', 'longstring'];
print_r(array_map(fn($x) => strlen($x), $array));
In older versions of php you still have to use:
array_map(
function ($x) {
return strlen($x);
},
$array
);
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