<?php
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namespace AlibabaCloud\Tea;
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class Helper
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{
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/**
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* @param string $content
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* @param string $prefix
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* @param string $end
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* @param string[] $filter
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*
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* @return string|string[]
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*/
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public static function findFromString($content, $prefix, $end, $filter = ['"', ' '])
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{
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$len = mb_strlen($prefix);
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$pos = mb_strpos($content, $prefix);
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if (false === $pos) {
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return '';
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}
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$pos_end = mb_strpos($content, $end, $pos);
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$str = mb_substr($content, $pos + $len, $pos_end - $pos - $len);
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return str_replace($filter, '', $str);
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}
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/**
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* @param string $str
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*
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* @return bool
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*/
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public static function isJson($str)
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{
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json_decode($str);
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return \JSON_ERROR_NONE == json_last_error();
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}
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/**
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* @param mixed $value
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*
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* @return bool
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*/
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public static function isBytes($value)
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{
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if (!\is_array($value)) {
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return false;
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}
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$i = 0;
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foreach ($value as $k => $ord) {
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if ($k !== $i) {
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return false;
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}
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if (!\is_int($ord)) {
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return false;
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}
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if ($ord < 0 || $ord > 255) {
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return false;
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}
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++$i;
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}
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return true;
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}
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/**
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* Convert a bytes to string(utf8).
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*
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* @param array $bytes
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*
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* @return string the return string
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*/
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public static function toString($bytes)
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{
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$str = '';
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foreach ($bytes as $ch) {
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$str .= \chr($ch);
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}
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return $str;
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}
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/**
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* @return array
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*/
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public static function merge(array $arrays)
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{
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$result = [];
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foreach ($arrays as $array) {
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foreach ($array as $key => $value) {
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if (\is_int($key)) {
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$result[] = $value;
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continue;
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}
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if (isset($result[$key]) && \is_array($result[$key])) {
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$result[$key] = self::merge(
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[$result[$key], $value]
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);
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continue;
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}
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$result[$key] = $value;
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}
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}
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return $result;
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}
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}
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