81 lines
2.4 KiB
PHP
81 lines
2.4 KiB
PHP
<?php
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namespace MailPoet\Util;
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/*
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* Using func_get_args() in order to check for proper number of parameters and trigger errors exactly as the built-in array_column()
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* does in PHP 5.5.
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* @author Ben Ramsey (http://benramsey.com)
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*/
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function array_column($input = null, $column_key = null, $index_key = null) {
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$argc = func_num_args();
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$params = func_get_args();
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if (!empty(\array_column([['id' => '4']], 'id'))) {
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return \array_column($input, $column_key, $index_key);
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}
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if ($argc < 2) {
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trigger_error("array_column() expects at least 2 parameters, {$argc} given", E_USER_WARNING);
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return null;
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}
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if (!is_array($params[0])) {
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trigger_error(
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'array_column() expects parameter 1 to be array, ' . gettype($params[0]) . ' given',
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E_USER_WARNING
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);
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return null;
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}
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if (!is_int($params[1])
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&& !is_float($params[1])
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&& !is_string($params[1])
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&& $params[1] !== null
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&& !(is_object($params[1]) && method_exists($params[1], '__toString'))
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) {
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trigger_error('array_column(): The column key should be either a string or an integer', E_USER_WARNING);
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return false;
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}
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if (isset($params[2])
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&& !is_int($params[2])
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&& !is_float($params[2])
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&& !is_string($params[2])
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&& !(is_object($params[2]) && method_exists($params[2], '__toString'))
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) {
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trigger_error('array_column(): The index key should be either a string or an integer', E_USER_WARNING);
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return false;
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}
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$params_input = $params[0];
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$params_column_key = ($params[1] !== null) ? (string)$params[1] : null;
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$params_index_key = null;
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if (isset($params[2])) {
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if (is_float($params[2]) || is_int($params[2])) {
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$params_index_key = (int)$params[2];
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} else {
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$params_index_key = (string)$params[2];
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}
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}
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$result_array = [];
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foreach ($params_input as $row) {
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$key = $value = null;
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$key_set = $value_set = false;
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if ($params_index_key !== null && array_key_exists($params_index_key, $row)) {
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$key_set = true;
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$key = (string)$row[$params_index_key];
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}
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if ($params_column_key === null) {
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$value_set = true;
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$value = $row;
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} elseif (is_array($row) && array_key_exists($params_column_key, $row)) {
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$value_set = true;
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$value = $row[$params_column_key];
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}
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if ($value_set) {
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if ($key_set) {
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$result_array[$key] = $value;
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} else {
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$result_array[] = $value;
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}
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}
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}
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return $result_array;
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}
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