PHP\u7b49\u30b5\u30fc\u30d0\u30b5\u30a4\u30c9\u7cfb\u306e\u8a00\u8a9e\u306f\u5229\u7528\u4e0d\u53ef(JS\u306f\u5229\u7528\u53ef)\u306a\u74b0\u5883\u3067form\u3092\u4f5c\u6210\u3057\u753b\u50cf\u3092\u9001\u4fe1\u3057\u305f\u3044\u3068\u3044\u3046\u30b1\u30fc\u30b9\u304c\u3042\u3063\u305f\u3002\u307e\u305f\u3001\u30d5\u30a1\u30a4\u30eb\u306e\u9001\u4fe1\u304c\u7121\u7406\u3067\u3082\u4f55\u3089\u304b\u306e\u65b9\u6cd5\u3067\u305d\u306e\u753b\u50cf\u304c\u898b\u3089\u308c\u308c\u3070\u826f\u3044\u3068\u3044\u3046\u72b6\u6cc1\u3060\u3063\u305f\u3002\u753b\u50cf\u3060\u3051PHP\u5229\u7528\u53ef\u306a\u4ed6\u6240\u306e\u30b5\u30fc\u30d0\u306b\u9001\u4fe1\u3059\u308b\u7b49\u3082\u8003\u3048\u305f\u3051\u3069\u3068\u308a\u3042\u3048\u305a\u306fBase64\u30a8\u30f3\u30b3\u30fc\u30c9\u3057\u3066\u9001\u4fe1\u3059\u308b\u3053\u3068\u306b\u3057\u305f\u3002\u4ee5\u4e0b\u306b\u5bfe\u5fdc\u65b9\u6cd5\u3092\u30e1\u30e2\u3002<\/p>\n
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<html lang=\"ja\">\r\n<head>\r\n<meta http-equiv=\"Content-Type\" content=\"text\/html; charset=UTF-8\">\r\n<title>Base64<\/title>\r\n<\/head>\r\n<style>\r\n.thumb img{\r\n max-width: 150px;\r\n margin-bottom: 10px;\r\n}\r\n<\/style>\r\n<body>\r\n\r\n<?php\r\n\/\/\u753b\u50cf\u304c\u9001\u4fe1\u3055\u308c\u3066\u304d\u305f\u5834\u5408\u306fimg\u30bf\u30b0\u3067\u8868\u793a\r\nif( $_POST['submit_img'] ){\r\n echo '<img src=\"' . $_POST['submit_img'] . '\">';\r\n}\r\n?>\r\n\r\n<form action=\".\/\" method=\"post\">\r\n\r\n <input type=\"file\" name=\"img\" id=\"img\">\r\n <div id=\"thumb\" class=\"thumb\"><\/div>\r\n\r\n <input type=\"hidden\" name=\"submit_img\" id=\"submit_img\">\r\n <input type=\"submit\" name=\"submit\">\r\n\r\n<\/form>\r\n\r\n<script type=\"text\/javascript\" src=\"\/\/code.jquery.com\/jquery-3.5.1.js\"><\/script>\r\n<script type=\"text\/javascript\">\r\n$(function(){\r\n $('#img').change(function(){\r\n\r\n \/\/\u753b\u50cf\u53d6\u5f97\r\n const img = $('#img').prop('files')[0];\r\n const type = img.type;\r\n\r\n \/\/\u753b\u50cf\u304b\u3069\u3046\u304b\u30c1\u30a7\u30c3\u30af\r\n if( !type.match(\/^image\/) ){\r\n alert('\u753b\u50cf\u3092\u9078\u629e\u3057\u3066\u304f\u3060\u3055\u3044');\r\n $(this).val('');\r\n return false;\r\n }\r\n\r\n \/\/FileReader\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306e\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u5316\r\n let reader = new FileReader();\r\n\r\n \/\/\u753b\u50cf\u306e\u8aad\u307f\u8fbc\u307f\r\n reader.readAsDataURL(img);\r\n\r\n \/\/\u8aad\u307f\u8fbc\u307f\u5931\u6557\u6642\r\n reader.onerror = function(){\r\n alert('\u30d5\u30a1\u30a4\u30eb\u8aad\u307f\u53d6\u308a\u306b\u5931\u6557\u3057\u307e\u3057\u305f');\r\n $(this).val('');\r\n return false;\r\n }\r\n\r\n \/\/\u753b\u50cf\u3092\u8868\u793a\r\n reader.onload = function() {\r\n $('#thumb').html('<img src=\"' + reader.result + '\">');\r\n $('#submit_img').val(reader.result);\r\n }\r\n\r\n });\r\n})\r\n<\/script>\r\n<\/body>\r\n<\/html><\/pre>\n\u300c<input type=\"file\" name=\"img\" id=\"img\">\u300d\u90e8\u5206\u306bBase64\u30a8\u30f3\u30b3\u30fc\u30c9\u3057\u305f\u6587\u5b57\u5217\u306f\u5165\u3089\u306a\u3044\u306e\u3067hidden\u306e\u3068\u3053\u308d\u306b\u5165\u308c\u3066\u3042\u3052\u308b\u5fc5\u8981\u304c\u3042\u308b\u3002<\/p>\n
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\u6240\u611f<\/h2>\n