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<?php
/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*/
$usedVariable;
fn($used, $unused) => $used; // 1a $unused
$fn = fn($used, $unused) => $used; // 1b $unused
fn($unused, $used) => $used; // 2a $unused
$fn = fn($unused, $used) => $used; // 2b $unused
fn($used1, $used2) => $used1 + $used2;
$fn = fn($used1, $used2) => $used1 + $used2;
fn($unused1, $unused2) => $used1 + $used2; // 3a $unused1 $unused2
$fn = fn($unused1, $unused2) => $used1 + $used2; // 3b $unused1 $unused2
fn($used) => $used + $usedVariable;
$fn = fn($used) => $used + $usedVariable;
fn(array $used) => $used;
fn(array $unused) => $used; // 4 $unused
fn($used = 100) => $used;
fn($unused = 100) => $used; // 5 $unused
fn(&$used) => $used;
fn(&$unused) => $used; // 6 $unused
fn&($used) => $used;
fn&($unused) => $used; // 7 $unused
fn($used1, ...$used2) => $used1 + count($used2);
fn($unused, ...$used) => $used; // 8 $unused
fn($unused1, ...$unused2) => $used; // 9 $unused1 $unused2
$af = fn($used) => $callable1($callable2($used), $used);
$af = fn($unused) => $callable1($callable2($used), $used); // 10 $unused
$af = Example::test([1, 2])
->test1(fn($used) => $used * 2)
->test2(fn($used1, $used2) => $used1 + $used2, 0);
$af = Example::test([1, 2])
->test1(fn($unused) => $used * 2) // 11 $unused
->test2(fn($unused1, $unused2) => $used1 + $used2, 0); // 12 $unused1 $unused2
function array_map_example1(array $usedArray, array $usedKeys) {
return array_map(fn($used) => $usedArray[$used], $usedKeys);
}
function array_map_example2(array $unusedArray, array $unusedKeys) { // 13 $unusedArray $unusedKeys
$used = "test";
$usedArray = "test";
$usedKeys = "test";
return array_map(fn($unused) => $usedArray[$used], $usedKeys); // 14 $unused
}
function test1(callable $usedCallable) {
return fn(...$used) => !$usedCallable(...$used);
}
function test2(callable $unusedCallable) { // 15 $unusedCallable
return fn(...$unused) => !$usedCallable(...$used); // 16 $unused
}
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