在 PHP 7.4 中执行 array_diff — 计算数组的差集 时，报错：Object of class ThemeVersion could not be converted to string
1、在 PHP 7.4 中执行 array_diff — 计算数组的差集 时，报错：Object of class ThemeVersion could not be converted to string。如图1
图1
1 2 3 4 5 6 7 8 9 10 11 12 | { "message": "Object of class Modules\\ThemeStoreDb\\ThemeSetting\\ThemeVersion could not be converted to string", "status_code": 500, "debug": { "line": 299, "file": "E:\\wwwroot\\object\\Modules\\ThemeStoreDb\\Handlers\\ThemeHandler.php", "class": "Symfony\\Component\\Debug\\Exception\\FatalThrowableError", "trace": [ "#0 E:\\wwwroot\\object\\Modules\\ThemeStoreDb\\Handlers\\ThemeHandler.php(299): array_diff(Array, Array)", ] }} |
2、代码实现如下，分别打印两个比较的数组
1 2 3 4 | print_r($versions);print_r($executedMigrations);exit;$scheduledVersions = array_diff($versions, $executedMigrations); |
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 | Array( [0] => Modules\ThemeStoreDb\ThemeSetting\ThemeVersion Object ( [version] => 2023_07_07_10_custom_mobile_layout ) [1] => Modules\ThemeStoreDb\ThemeSetting\ThemeVersion Object ( [version] => v2.0.20 ) [2] => Modules\ThemeStoreDb\ThemeSetting\ThemeVersion Object ( [version] => v2.0.21 ) [3] => Modules\ThemeStoreDb\ThemeSetting\ThemeVersion Object ( [version] => v2.0.28 ) [4] => Modules\ThemeStoreDb\ThemeSetting\ThemeVersion Object ( [version] => v2.1.1 ) [5] => Modules\ThemeStoreDb\ThemeSetting\ThemeVersion Object ( [version] => v2.1.2 ) [6] => Modules\ThemeStoreDb\ThemeSetting\ThemeVersion Object ( [version] => v2.1.3 ) [7] => Modules\ThemeStoreDb\ThemeSetting\ThemeVersion Object ( [version] => v2.1.30 ) [8] => Modules\ThemeStoreDb\ThemeSetting\ThemeVersion Object ( [version] => v2.1.65 ) [9] => Modules\ThemeStoreDb\ThemeSetting\ThemeVersion Object ( [version] => v2.1.70 ) [10] => Modules\ThemeStoreDb\ThemeSetting\ThemeVersion Object ( [version] => v2.1.80 ))Array( [0] => Modules\ThemeStoreDb\ThemeSetting\ThemeVersion Object ( [version] => v2.0.20 ) [1] => Modules\ThemeStoreDb\ThemeSetting\ThemeVersion Object ( [version] => v2.0.21 ) [2] => Modules\ThemeStoreDb\ThemeSetting\ThemeVersion Object ( [version] => v2.0.28 ) [3] => Modules\ThemeStoreDb\ThemeSetting\ThemeVersion Object ( [version] => v2.1.1 ) [4] => Modules\ThemeStoreDb\ThemeSetting\ThemeVersion Object ( [version] => v2.1.2 ) [5] => Modules\ThemeStoreDb\ThemeSetting\ThemeVersion Object ( [version] => v2.1.3 ) [6] => Modules\ThemeStoreDb\ThemeSetting\ThemeVersion Object ( [version] => v2.1.30 )) |
3、调整为 array_udiff — 用回调函数比较数据来计算数组的差集。strcasecmp — 二进制安全比较字符串（不区分大小写）
1 2 3 4 | //$scheduledVersions = array_diff($versions, $executedMigrations);$scheduledVersions = array_udiff($versions, $executedMigrations, function ($version, $executedMigration) { return strcasecmp($version->version, $executedMigration->version);}); |
4、最后的结果符合预期。
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 | Array( [0] => Modules\ThemeStoreDb\ThemeSetting\ThemeVersion Object ( [version] => v2.1.65 ) [1] => Modules\ThemeStoreDb\ThemeSetting\ThemeVersion Object ( [version] => v2.1.70 ) [2] => Modules\ThemeStoreDb\ThemeSetting\ThemeVersion Object ( [version] => v2.1.80 ) [3] => Modules\ThemeStoreDb\ThemeSetting\ThemeVersion Object ( [version] => 2023_07_07_10_custom_mobile_layout )) |
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