PHP\u306b\u3066\u958b\u59cb\u65e5\u3068\u7d42\u4e86\u65e5\u3092\u30e6\u30fc\u30b6\u304c\u5165\u529b\u3059\u308b\u3068\u3001\u305d\u306e\u671f\u9593\u5185\u306e\u5408\u8a08\u65e5\u6570\u3092\u51fa\u529b\u3055\u305b\u305f\u3044\u3068\u3044\u3046\u30b1\u30fc\u30b9\u304c\u3042\u3063\u305f\u3002\u30eb\u30fc\u30d7\u3067\u56de\u3057\u3066\u30ab\u30a6\u30f3\u30c8\u3057\u3066\u3082\u826f\u3044\u3093\u3060\u3051\u3069\u3001\u30bd\u30fc\u30b9\u30b3\u30fc\u30c9\u306e\u898b\u305f\u76ee\u7684\u306b\u826f\u304f\u306a\u304f\u52b9\u7387\u7684\u3068\u3082\u601d\u3048\u306a\u3044\u306e\u3067\u4ed6\u306e\u65b9\u6cd5\u3092\u8abf\u3079\u3066\u307f\u305f\u3068\u3053\u308dDateTime::diff\u3092\u4f7f\u7528\u3059\u308b\u306e\u304c\u826f\u3055\u305d\u3046\u3002\u4ee5\u4e0b\u306b\u65b9\u6cd5\u3092\u30e1\u30e2\u3002<\/p>\n
<\/p>\n
<?php\r\n$start = new Datetime('2024-01-01');\r\n$end = new Datetime('2024-01-07');\r\n$diff = $start->diff($end);\r\n\r\nvar_dump($diff->days); \/\/6\r\n\r\n\r\n$start = new Datetime('2024-01-01');\r\n$end = new Datetime('2024-12-31');\r\n$diff = $start->diff($end);\r\n\r\nvar_dump($diff->days); \/\/365(2024\u5e74\u306f\u3046\u308b\u3046\u5e74)\r\n<\/pre>\n\u6ce8\u610f\u70b9<\/h3>\n
DateTime::diff\u306f\u5dee\u3092\u8fd4\u3059\u3068\u3044\u3046\u6319\u52d5\u306b\u306a\u308a\u3001\u958b\u59cb\u65e5\u306f\u542b\u307e\u308c\u306a\u3044\u3088\u3046\u306a\u5f62\u306b\u306a\u308b\u30021\/1\uff5e1\/7\u306e\u5408\u8a08\u65e5\u6570\u30927\u65e5\u9593\u3068\u3057\u3066\u30ab\u30a6\u30f3\u30c8\u3059\u308b\u306b\u306f+1\u3059\u308b\u5fc5\u8981\u304c\u3042\u308b\u70b9\u306b\u6ce8\u610f\u3002<\/p>\n
<\/p>\n
\u30ea\u30d5\u30a1\u30ec\u30f3\u30b9<\/h2>\n