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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.
*/
// nested arrow/lambda functions
$usedLexialVariable = 100;
fn(array $usedArray) => fn(int $usedNumber) => $usedNumber + count($usedArray);
$fn = fn(array $usedArray) => fn(int $usedNumber) => $usedNumber + count($usedArray);
fn(array $unusedArray) => fn(int $unusedNumber) => $usedNumber + count($usedArray); // unused 1a $unusedArray $unusedNumber
$fn = fn(array $unusedArray) => fn(int $unusedNumber) => $usedNumber + count($usedArray); // unused 1b $unusedArray $unusedNumber
function ($usedLambdaParam) use ($usedLexialVariable) {
return fn($used) => $used + $usedLambdaParam + $usedLexialVariable;
};
function ($unusedLabmdaParam) use ($unusedLexialVariable) { // unused 2a $unusedLabmdaParam $unusedLexialVariable
return fn($unused) => $used + $usedLabmdaParam + $usedLexialVariable; // unused 2b $unused
};
$fn = function ($unused) use ($usedLexialVariable) { // unused 3 $unused
return fn($used) => $used + $usedLexialVariable;
};
fn($used) => function ($usedLambda) use ($used) {
return $usedLambda + $used;
};
fn($unused) => function ($usedLambda) use ($usedLexialVariable) {// unused 4 $unused
return $usedLambda + $usedLexialVariable;
};
// $unused1 is not used
$fn = fn($unused1) => function ($unusedLambda) use ($unusedLexialVariable) { // unused 5a $unused1 $unusedLambda $unusedLexialVariable
return fn(int $unused): ?int => $unused1 + $usedLambda + $usedLexialVariable; // unused 5b $unused
};
// $unused1 is not used
$fn = fn($unused1) => function ($usedLambda) use ($unusedLexialVariable) { // unused 6a $unused1 $unusedLexialVariable
test($usedLambda);
return fn(int $unused): ?int => $unused1 + $usedLambda + $usedLexialVariable; // unused 6b $unused
};
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