yiranzai /
php-tools
| 1 | <?php |
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| 2 | /** |
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| 3 | * Created by PhpStorm. |
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| 4 | * User: yiranzai |
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| 5 | * Date: 19-3-22 |
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| 6 | * Time: 上午10:59 |
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| 7 | */ |
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| 8 | |||
| 9 | namespace Yiranzai\Tools; |
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| 10 | |||
| 11 | use ArrayAccess; |
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| 12 | use Exception; |
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| 13 | |||
| 14 | class Tools |
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| 15 | { |
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| 16 | /** |
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| 17 | * 转化内存信息 |
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| 18 | * @param $bytes |
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| 19 | * @param bool $binaryPrefix |
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| 20 | * @return string |
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| 21 | */ |
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| 22 | 3 | public static function getNiceFileSize(int $bytes, bool $binaryPrefix = true): string |
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| 23 | { |
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| 24 | 3 | if ($binaryPrefix) { |
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| 25 | 3 | $unit = array('B', 'KiB', 'MiB', 'GiB', 'TiB', 'PiB'); |
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| 26 | 3 | if ($bytes === 0) { |
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| 27 | 3 | return '0 ' . $unit[0]; |
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| 28 | } |
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| 29 | 3 | return @round($bytes / (1024 ** ($i = floor(log($bytes, 1024)))), 2) . ' ' . ($unit[(int)$i] ?? 'B'); |
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| 30 | } |
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| 31 | |||
| 32 | 3 | $unit = array('B', 'KB', 'MB', 'GB', 'TB', 'PB'); |
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| 33 | 3 | if ($bytes === 0) { |
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| 34 | 3 | return '0 ' . $unit[0]; |
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| 35 | } |
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| 36 | 3 | return @round($bytes / (1000 ** ($i = floor(log($bytes, 1000)))), 2) . ' ' . ($unit[(int)$i] ?? 'B'); |
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| 37 | } |
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| 38 | |||
| 39 | /** |
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| 40 | * 调用对象的方法 |
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| 41 | * @param object $object |
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| 42 | * @param string $func |
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| 43 | * @param array $params |
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| 44 | * @param null $default |
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| 45 | * @return mixed|null |
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| 46 | */ |
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| 47 | 3 | public static function callFunc($object, $func, array $params = [], $default = null) |
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| 48 | { |
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| 49 | 3 | if (is_object($object) && method_exists($object, $func)) { |
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| 50 | 3 | return call_user_func_array([$object, $func], $params); |
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| 51 | } |
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| 52 | 3 | return $default; |
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| 53 | } |
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| 54 | |||
| 55 | /** |
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| 56 | * 获取一个对象或者一个数组的属性 |
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| 57 | * |
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| 58 | * @param $iterator |
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| 59 | * @param mixed $key |
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| 60 | * @param mixed|null $default |
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| 61 | * @return mixed |
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| 62 | * @throws Exception |
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| 63 | */ |
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| 64 | 12 | public static function iteratorGet($iterator, $key, $default = null) |
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| 65 | { |
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| 66 | 12 | if (empty($iterator)) { |
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| 67 | 6 | if ($default instanceof Exception) { |
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| 68 | 3 | throw $default; |
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| 69 | } |
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| 70 | |||
| 71 | 3 | return $default; |
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| 72 | } |
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| 73 | |||
| 74 | 9 | if (is_object($iterator)) { |
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| 75 | 6 | if (!method_exists($iterator, $key)) { |
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| 76 | 6 | if ($iterator instanceof ArrayAccess) { |
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| 77 | 3 | return self::arrGet($iterator, $key, $default); |
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| 78 | } |
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| 79 | 6 | return self::objectGet($iterator, $key, $default); |
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| 80 | } |
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| 81 | // 对象获取 |
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| 82 | 3 | return self::objectGet($iterator, $key, $default); |
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| 83 | } |
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| 84 | |||
| 85 | // 数组获取 |
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| 86 | 6 | return self::arrGet($iterator, $key, $default); |
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| 87 | } |
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| 88 | |||
| 89 | /** |
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| 90 | * 获取数组中的某个元素 |
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| 91 | * @param array|mixed $arr 数组 |
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| 92 | * @param mixed $key 下标 |
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| 93 | * @param null|mixed $default 默认值 |
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| 94 | * @return mixed|null 如果存在指定元素则返回元素,否则返回默认值 |
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| 95 | * @throws Exception |
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| 96 | */ |
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| 97 | 15 | public static function arrGet($arr, $key, $default = null) |
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| 98 | { |
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| 99 | 15 | $isDefault = false; |
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| 100 | |||
| 101 | 15 | if (empty($arr) || (empty($key) && 0 !== $key)) { |
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| 102 | 3 | $isDefault = true; |
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| 103 | 15 | } elseif (!isset($arr[$key])) { |
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| 104 | 12 | $isDefault = true; |
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| 105 | } |
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| 106 | |||
| 107 | 15 | if ($isDefault) { |
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| 108 | 12 | if ($default instanceof Exception) { |
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| 109 | 6 | throw $default; |
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| 110 | } |
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| 111 | 6 | return $default; |
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| 112 | } |
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| 113 | |||
| 114 | 9 | return $arr[$key]; |
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| 115 | } |
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| 116 | |||
| 117 | /** |
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| 118 | * 获取对象中的某个元素 |
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| 119 | * @param object $json json对象 |
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| 120 | * @param string $key 下标 |
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| 121 | * @param null|mixed $default 默认值 |
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| 122 | * @return mixed|null 如果存在指定元素则返回该元素,否则返回默认值 |
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| 123 | * @throws Exception |
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| 124 | */ |
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| 125 | 12 | public static function objectGet($json, $key, $default = null) |
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| 126 | { |
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| 127 | 12 | $isDefault = false; |
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| 128 | |||
| 129 | 12 | if (empty($json) || empty($key)) { |
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| 130 | 3 | $isDefault = true; |
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| 131 | 12 | } elseif (!isset($json->{$key})) { |
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| 132 | 12 | $isDefault = true; |
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| 133 | } |
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| 134 | |||
| 135 | 12 | if ($isDefault) { |
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| 136 | 12 | if ($default instanceof Exception) { |
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| 137 | 6 | throw $default; |
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| 138 | } |
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| 139 | |||
| 140 | 6 | return $default; |
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| 141 | } |
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| 142 | |||
| 143 | 6 | return $json->{$key}; |
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| 144 | } |
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| 145 | } |
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| 146 |