{"id":6681,"date":"2024-11-18T10:12:26","date_gmt":"2024-11-18T01:12:26","guid":{"rendered":"https:\/\/taitan916.info\/blog\/?p=6681"},"modified":"2024-08-28T13:33:55","modified_gmt":"2024-08-28T04:33:55","slug":"post-6681","status":"publish","type":"post","link":"https:\/\/taitan916.info\/blog\/archives\/6681","title":{"rendered":"PHP\u306b\u3066\u300cImageHash\u300d\u30e9\u30a4\u30d6\u30e9\u30ea\u3092\u4f7f\u7528\u3057\u753b\u50cf\u306e\u985e\u4f3c\u5ea6\u3092\u7b97\u51fa\u3059\u308b\u65b9\u6cd5"},"content":{"rendered":"<p>\u4ee5\u524d\u306b<a href=\"https:\/\/taitan916.info\/blog\/archives\/6389\" target=\"_blank\" rel=\"noopener\">PHP\u306e\u300cimage-comparator\u300d\u30e9\u30a4\u30d6\u30e9\u30ea\u3067\u753b\u50cf\u306e\u985e\u4f3c\u5ea6\u3092\u7b97\u51fa\u3059\u308b\u65b9\u6cd5<\/a>\u3092\u30e1\u30e2\u3057\u305f\u304c\u3001\u4eca\u56de\u306f\u300cImageHash\u300d\u30e9\u30a4\u30d6\u30e9\u30ea\u3068\u3044\u3046\u3082\u306e\u3092\u898b\u3064\u3051\u305f\u306e\u3067\u3053\u3061\u3089\u3067\u540c\u3058\u3088\u3046\u306a\u3053\u3068\u3092\u8a66\u3057\u3066\u307f\u305f\u3044\u3002\u4ee5\u4e0b\u306b\u30b5\u30f3\u30d7\u30eb\u3068\u5229\u7528\u65b9\u6cd5\u3092\u30e1\u30e2\u3002<\/p>\n<p>&nbsp;<\/p>\n<h2>\u30b5\u30f3\u30d7\u30eb<\/h2>\n<p><a href=\"https:\/\/taitan916.info\/sample\/ImageHash\/\" target=\"_blank\" rel=\"noopener\">https:\/\/taitan916.info\/sample\/ImageHash\/<\/a><\/p>\n<p>&nbsp;<\/p>\n<h2>ImageHash<\/h2>\n<h3>GitHub<\/h3>\n<p><a href=\"https:\/\/github.com\/jenssegers\/imagehash\" target=\"_blank\" rel=\"noopener\">https:\/\/github.com\/jenssegers\/imagehash<\/a><\/p>\n<p>&nbsp;<\/p>\n<h2><span id=\"i-2\"><span id=\"i-4\">\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb<\/span><\/span><\/h2>\n<p>\u30b5\u30fc\u30d0\u306bSSH\u63a5\u7d9a\u3057\u4ee5\u4e0b\u30b3\u30de\u30f3\u30c9\u3067\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\u3059\u308b\u3002<\/p>\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\">composer require jenssegers\/imagehash<\/pre>\n<p>&nbsp;<\/p>\n<h2>\u5229\u7528\u65b9\u6cd5<\/h2>\n<h3>\u30bd\u30fc\u30b9\u30b3\u30fc\u30c9<\/h3>\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\">&lt;?php\r\nrequire 'vendor\/autoload.php';\r\nuse Jenssegers\\ImageHash\\Hash;\r\nuse Jenssegers\\ImageHash\\ImageHash;\r\nuse Jenssegers\\ImageHash\\Implementations\\DifferenceHash;\r\n\r\n$hasher = new ImageHash(new DifferenceHash());\r\n\r\n\/\/\u753b\u50cf\u3092\u30cf\u30c3\u30b7\u30e5\u5316\r\n$hash_1 = $hasher-&gt;hash('.\/img\/001.webp');\r\n\r\n\/\/\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u306b\u4fdd\u5b58\u3059\u308b\u305f\u3081\u306b64bit\u5316\r\n$hash_1_bit = $hash_1-&gt;toBits();\r\nvar_dump($hash_1_bit); \/\/0010011101000011000100110011011100110111001111100010111001101111\r\n\r\n\/\/\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u304b\u3089\u53d6\u308a\u51fa\u3057\u305f\u5024\u3092\u30cf\u30c3\u30b7\u30e5\u306b\u5909\u63db\r\n$hash_1_hash = Hash::fromBits($hash_1_bit);\r\n\r\n$hash_2 = $hasher-&gt;hash('.\/img\/002.webp');\r\n\r\n\/\/\u985e\u4f3c\u5ea6\u306e\u7b97\u51fa\r\n$distance = $hasher-&gt;distance($hash_1_hash, $hash_2);\r\nvar_dump($distance); \/\/29\r\n<\/pre>\n<h3>\u985e\u4f3c\u5ea6\u306b\u3064\u3044\u3066<\/h3>\n<p>\u300cimage-comparator\u300d\u30e9\u30a4\u30d6\u30e9\u30ea\u3068\u306f\u7570\u306a\u308a\u3001\u985e\u4f3c\u5ea6\u306f\u6570\u5024\u304c\u5c0f\u3055\u3044\u65b9\u304c\u985e\u4f3c\u3057\u3066\u3044\u308b\u3068\u3044\u3046\u5224\u5b9a\u306b\u306a\u308b\u3002<\/p>\n<p>\u30b5\u30a4\u30c8\u4e0a\u3067\u4f7f\u3046\u5834\u5408\u306b\u306f\u300c100 - \u7b97\u51fa\u3057\u305f\u985e\u4f3c\u5ea6\u300d\u3067\u8868\u793a\u3057\u305f\u3044\u3068\u3053\u308d\u3060\u3051\u3069\u3001GitHub\u306b\u3066\u300c\u7b49\u3057\u3044\u753b\u50cf\u306e\u8ddd\u96e2\u304c\u5e38\u306b0\u306b\u306a\u308b\u3068\u306f\u9650\u3089\u306a\u3044\u300d\u3068\u306e\u4f46\u3057\u66f8\u304d\u304c\u3042\u308b\u70b9\u306b\u6ce8\u610f(\u540c\u3058\u753b\u50cf\u3067\u3082\u985e\u4f3c\u5ea6100\u306b\u306a\u3089\u306a\u3044\u53ef\u80fd\u6027\u3042\u308a)\u3002<\/p>\n<h3>MySQL\u3068\u9023\u643a\u3059\u308b\u5834\u5408<\/h3>\n<p>MySQL\u3068\u9023\u643a\u3059\u308b\u5834\u5408\u306f64bit\u5316\u3057\u305f\u3082\u306e\u3092\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u306b\u683c\u7d0d\u3057\u3066\u304a\u304d\u3001\u4ee5\u4e0b\u306e\u8a18\u4e8b\u306e\u901a\u308a\u7b97\u51fa\u3059\u308b\u3068\u826f\u3044\u3002<\/p>\n<blockquote class=\"wp-embedded-content\" data-secret=\"Y1ZWFoxRQX\"><p><a href=\"https:\/\/taitan916.info\/blog\/archives\/6396\">MySQL\u3068PHP\u306e\u300cimage-comparator\u300d\u30e9\u30a4\u30d6\u30e9\u30ea\u3092\u4f7f\u7528\u3057\u3066\u985e\u4f3c\u753b\u50cf\u691c\u7d22\u3092\u5b9f\u88c5\u3059\u308b\u65b9\u6cd5<\/a><\/p><\/blockquote>\n<p><iframe loading=\"lazy\" class=\"wp-embedded-content\" sandbox=\"allow-scripts\" security=\"restricted\" style=\"position: absolute; 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