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array-functions.php ➔ array_quote()   A

Complexity

Conditions 1
Paths 1

Size

Total Lines 4
Code Lines 2

Duplication

Lines 0
Ratio 0 %

Importance

Changes 0
Metric Value
cc 1
eloc 2
nc 1
nop 3
dl 0
loc 4
rs 10
c 0
b 0
f 0
1
<?php
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/**
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 * Copyright (c) 2016-present Ganbaro Digital Ltd
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 * All rights reserved.
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 *
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 * Redistribution and use in source and binary forms, with or without
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 * modification, are permitted provided that the following conditions
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 * are met:
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 *
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 *   * Redistributions of source code must retain the above copyright
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 *     notice, this list of conditions and the following disclaimer.
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 *
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 *   * Redistributions in binary form must reproduce the above copyright
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 *     notice, this list of conditions and the following disclaimer in
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 *     the documentation and/or other materials provided with the
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 *     distribution.
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 *
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 *   * Neither the names of the copyright holders nor the names of his
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 *     contributors may be used to endorse or promote products derived
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 *     from this software without specific prior written permission.
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 *
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 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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 * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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 * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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 * POSSIBILITY OF SUCH DAMAGE.
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 *
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 * @category  Libraries
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 * @package   MissingBits/ArrayFunctions
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 * @author    Stuart Herbert <[email protected]>
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 * @copyright 2016-present Ganbaro Digital Ltd www.ganbarodigital.com
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 * @license   http://www.opensource.org/licenses/bsd-license.php  BSD License
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 * @link      http://ganbarodigital.github.io/php-the-missing-bits
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 */
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/**
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 * append one array to another, ignoring the array keys in $extra
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 *
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 * added because of the observed performance problems with array_merge()
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 * at scale
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 *
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 * @param  array $target
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 *         the array to append to
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 * @param  array $extra
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 *         the array that we want to append
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 * @return array
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 *         the combined array
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 */
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function array_append_values(array $target, array $extra)
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{
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    $retval = $target;
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    foreach ($extra as $value) {
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        $retval[] = $value;
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    }
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    // all done
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    return $retval;
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}
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/**
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 * append one array to another, respecting the array keys in $extra
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 *
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 * added because of the observed performance problems with array_merge()
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 * at scale
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 *
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 * @param  array $target
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 *         the array to merge into
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 * @param  array $extra
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 *         the array that we want to merge with $target
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 * @return array
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 *         the combined array
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 */
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function array_merge_keys($target, $extra)
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{
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    $retval = $target;
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    foreach ($extra as $key => $value) {
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        $retval[$key] = $value;
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    }
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    // all done
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    return $retval;
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}
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/**
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 * build a subset of an array, that only consists of content that has
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 * been explicitly whitelisted
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 *
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 * we only keep:
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 * - keys in $target
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 * - that have a corresponding filter in $filterMap
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 * - where the corresponding filter:
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 *   - is `true`
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 *   - or is a `callable`
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 *
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 * we support child arrays, with corresponding child array filters
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 *
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 * @param  array $target
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 *         the array we want to filter
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 * @param  array $filterMap
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 *         list of whitelisted fields
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 * @return array
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 *         the resulting filtered array
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 */
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function array_whitelist(array $target, array $filterMap)
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{
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    // step 1: drop all filters that are FALSE
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    //
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    // it's a thing, what can I say?
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    $filterMap = array_filter($filterMap);
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    // step 2: first pass at fields that are whitelisted
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    //
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    // with simple filterMaps, this will do all the work
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    $retval = array_intersect_key($target, $filterMap);
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    // step 3: apply remaining filters
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    foreach ($filterMap as $key => $filter) {
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        switch(true) {
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            case is_callable($filter):
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                $retval[$key] = $filter($retval);
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                break;
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            // support for n-depth filters
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            case isset($retval[$key]) && is_array($filter) && (is_array($retval[$key]) || is_object($retval[$key])):
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                $retval[$key] = array_whitelist($retval[$key], $filter);
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                break;
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        }
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        // var_dump($key, $filter, $retval, $target);
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    }
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    return $retval;
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}
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function array_filter_contents(array $target, array $filterMap)
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{
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    $retval = $target;
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    foreach ($filterMap as $key => $filter) {
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        // nothing needs doing
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        if (!isset($retval[$key]) || $filter === true) {
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            continue;
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        }
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        // we want to remove this field
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        if ($filter === false) {
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            unset($retval[$key]);
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            continue;
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        }
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        if (is_callable($filter)) {
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            $retval[$key] = $filter($retval);
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            continue;
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        }
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        if (is_array($retval[$key]) && is_array($filter)) {
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            $retval[$key] = array_filter_contents($retval[$key], $filter);
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        }
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    }
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    return $retval;
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}
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function array_quote(array $data, string $separator = ',', string $quote = '"')
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{
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    return $quote . implode($quote . $separator . $quote, $data) . $quote;
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}