{"id":22784,"date":"2017-05-11T07:56:14","date_gmt":"2017-05-10T22:56:14","guid":{"rendered":"http:\/\/www.sejuku.net\/blog\/?p=22784"},"modified":"2025-04-23T10:25:05","modified_gmt":"2025-04-23T01:25:05","slug":"%e3%80%90php%e5%85%a5%e9%96%80%e3%80%91if%e6%96%87%e3%81%ae%e4%bd%bf%e3%81%84%e6%96%b9%e3%81%be%e3%81%a8%e3%82%81","status":"publish","type":"post","link":"https:\/\/www.sejuku.net\/blog\/22784","title":{"rendered":"\u3010PHP\u5165\u9580\u3011if\u6587\u306b\u3088\u308b\u6761\u4ef6\u5206\u5c90\u306e\u4f7f\u3044\u65b9\u3092\u57fa\u790e\u304b\u3089\u5fdc\u7528\u307e\u3067"},"content":{"rendered":"<p><div class=\"box_voice\">PHP\u3067if\u6587\uff08\u6761\u4ef6\u5f0f\uff09\u306e\u4f7f\u3044\u65b9\u3092\u77e5\u308a\u305f\u3044<br \/>\nif\u6587\u3092\u4f7f\u3044\u3053\u306a\u305b\u308b\u3088\u3046\u306b\u306a\u308a\u305f\u3044<\/div><\/p>\n<p>PHP\u306b\u9650\u3089\u305a\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u8a00\u8a9e\u3067\u306f\u3001<b>\u6761\u4ef6\u306b\u3088\u3063\u3066\u51e6\u7406\u3092\u5206\u5c90\u3055\u305b\u308b\u305f\u3081\u306eif\u6587<\/b>\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<p>if\u6587\u306f\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u3092\u3059\u308b\u4e0a\u3067\u6700\u3082\u57fa\u672c\u7684\u306a\u51e6\u7406\u3068\u306a\u308a\u307e\u3059\u306e\u3067\u3001\u4f7f\u3044\u65b9\u306f\u3057\u3063\u304b\u308a\u3068\u7406\u89e3\u3057\u3066\u304a\u304d\u307e\u3057\u3087\u3046\u3002<\/p>\n<p>\u3053\u306e\u8a18\u4e8b\u306f\u3053\u3093\u306a\u4eba\u306e\u305f\u3081\u306b\u66f8\u304d\u307e\u3057\u305f\u3002<\/p>\n<div class=\"box01\">\n<ul>\n<li>if\u6587\u306e\u57fa\u672c\u7684\u306a\u4f7f\u3044\u65b9\u3092\u77e5\u308a\u305f\u3044\u65b9<\/li>\n<li>if\u6587\u3067\u3055\u307e\u3056\u307e\u306a\u6761\u4ef6\u5206\u5c90\u306e\u65b9\u6cd5\u3092\u7406\u89e3\u3057\u3066\u304a\u304d\u305f\u3044\u65b9<\/li>\n<\/ul>\n<\/div>\n<p>\u203b\u3053\u306e\u8a18\u4e8b\u3067\u306fPHP\u306e\u300cVersion 7.1.1\u300d\u3067\u52d5\u4f5c\u78ba\u8a8d\u3057\u307e\u3057\u305f\u3002<\/p>\n<h2>\u524d\u63d0\u77e5\u8b58\uff1aif\u6587\u3068\u306f<\/h2>\n<h3>if\u6587\u306e\u66f8\u304d\u65b9<\/h3>\n<p>if\u6587\u3068\u306f\u3001\u6761\u4ef6\u304c\u771f\u306e\u5834\u5408\u306b\u51e6\u7406\u3092\u5b9f\u884c\u3057\u307e\u3059\u3002\u305f\u3068\u3048\u3070\u3001\u6761\u4ef6\u5206\u5c90\u306f\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u7b54\u3048\u304c\u771f\uff08true\uff09\u304b\u507d\uff08false\uff09\u304b\u3067\u8868\u3057\u307e\u3059\u3002<\/p>\n<div class=\"box01\">\n<ul>\n<li>\u3042\u306a\u305f\u306e\u5e74\u9f62\u306f20\u6b73\u4ee5\u4e0a\u3067\u3059\u304b\uff1f<\/li>\n<li>\u30c6\u30b9\u30c8\u306e\u70b9\u6570\u306f50\u70b9\u4ee5\u4e0a\u3067\u3057\u305f\u304b\uff1f<\/li>\n<\/ul>\n<\/div>\n<p>PHP\u3067\u306eif\u6587\u306f\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u8a18\u8ff0\u3057\u307e\u3059\u3002<\/p>\n<pre class=\"striped:false marking:false ranges:false nums:false nums-toggle:false lang:default decode:true \">if ( \u6761\u4ef6 ) {\r\n    \/\/ \u6761\u4ef6\u304c\u4e00\u81f4\u3057\u305f\u3068\u304d\u306b\u5b9f\u884c\u3059\u308b\u51e6\u7406\r\n}<\/pre>\n<p>\u6761\u4ef6\u3092\u30ab\u30c3\u30b3\u300e( )\u300f\u306e\u4e2d\u306b\u66f8\u304d\u3001\u51e6\u7406\u3092\u4e2d\u304b\u3063\u3053\u300e{ }\u300f\u306b\u66f8\u304f\u3053\u3068\u3067\u3001\u6761\u4ef6\u304c\u4e00\u81f4\u3057\u305f\u3068\u304d\u6642\u3060\u3051\u51e6\u7406\u3092\u5b9f\u884c\u3067\u304d\u307e\u3059\u3002<\/p>\n<p>\u6761\u4ef6\u5f0f\u306b\u306fbool\u578b\u306e\u771f\u507d\u5024\u3084\u5024\u306e\u5927\u5c0f\u3001\u5024\u306e\u4e00\u81f4\u3001\u95a2\u6570\u306e\u5b9f\u884c\u7d50\u679c\u306a\u3069\u3001\u3055\u307e\u3056\u307e\u306a\u6761\u4ef6\u3092\u6307\u5b9a\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n<h3>if\u6587\u3092\u5b9f\u884c\u3057\u3066\u307f\u3088\u3046<\/h3>\n<p>\u3067\u306f\u5b9f\u969b\u306bphp\u30d5\u30a1\u30a4\u30eb\u3092\u4f5c\u6210\u3057\u3066\u3001if\u6587\u3092\u5b9f\u884c\u3057\u3066\u307f\u307e\u3057\u3087\u3046\u3002<\/p>\n<p>\u4ee5\u4e0b\u306e\u4f8b\u3067\u306f\u3001\u50241\u3068\u50242\u3092\u6bd4\u8f03\u3057\u3066$\u50241\u306e\u5024\u304c\u5927\u304d\u304b\u3063\u305f\u3089\u3001if\u6587\u306e\u51e6\u7406\u304c\u5b9f\u884c\u3055\u308c\u307e\u3059\u3002<\/p>\n<pre class=\"lang:php decode:true \">\r\n&lt;?php\r\n\r\n$value1 = 200;\r\n$value2 = 100;\r\n\r\nif ($value1 &gt; $value2){\r\n  echo 'value1\u306fvalue2\u3088\u308a\u5927\u304d\u3044';\r\n  $value2 = $value1;\r\n}\r\n\r\n?&gt;\r\n<\/pre>\n<p>\u30d5\u30a1\u30a4\u30eb\u3092\u4fdd\u5b58\u3057\u3066\u30d6\u30e9\u30a6\u30b6\u3067\u5b9f\u884c\u3059\u308b\u3068\u3001\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u8868\u793a\u3055\u308c\u307e\u3059\u3002<\/p>\n<pre class=\"striped:false marking:false ranges:false nums:false nums-toggle:false lang:default decode:true \">\r\nvalue1\u306fvalue2\u3088\u308a\u5927\u304d\u3044\r\n<\/pre>\n<h2>if\u6587\u306e\u57fa\u672c<\/h2>\n<p>\u4ee5\u4e0b\u306e\u4f8b\u3067\u306f\u3001\u30eb\u30fc\u30d7\u3067\u914d\u5217\u306e\u4e2d\u306e\u5024\u30921\u3064\u305a\u3064\u53d6\u5f97\u3057\u3001\u6307\u5b9a\u3057\u305f\u6587\u5b57\u5217&#8221;melon&#8221;\u304c\u5b58\u5728\u3057\u305f\u5834\u5408\u306fbreak\u3067\u7e70\u308a\u8fd4\u3057\u51e6\u7406\u3092\u629c\u3051\u3066\u3044\u307e\u3059\u3002<\/p>\n<pre class=\"lang:php decode:true \">&lt;?php\r\n\r\n$fruits = ['apple', 'orange', 'melon', 'banana', 'pineapple'];\r\n$fruits_name = 'melon';\r\n\r\nforeach($fruits as $value){\r\n\r\n  if ($value == $fruits_name){\r\n    echo '\u4e00\u81f4 --&gt; '.$value;\r\n    break;\r\n  }\r\n}\r\n\r\n?&gt;\r\n<\/pre>\n<pre class=\"striped:false marking:false ranges:false nums:false nums-toggle:false lang:default decode:true \">\r\n\u4e00\u81f4 --&gt; melon\r\n<\/pre>\n<p>\u3053\u306e\u30d7\u30ed\u30b0\u30e9\u30e0\u3067\u3067\u4f7f\u7528\u3057\u305fbreak\u306b\u3064\u3044\u3066\u306f\u3001\u4ee5\u4e0b\u306e\u8a18\u4e8b\u3067\u3082\u8a73\u3057\u304f\u89e3\u8aac\u3057\u3066\u3044\u307e\u3059\u3002<br \/>\n            <a href=\"https:\/\/www.sejuku.net\/blog\/22128\" class=\"blog-card-anchor\">\n                <div class=\"blog-card\">\n                <div class=\"blog-card-content\">\n                    <div class=\"blog-card-thumbnail\">\n                    <img decoding=\"async\" class=\"blog-card-thumbnail-img\" src=\"https:\/\/www.sejuku.net\/blog\/wp-content\/uploads\/2017\/04\/image-39-150x86.jpg\">\n                    <\/div>\n                    <div class=\"blog-card-title-wrap\">\n                    <div class=\"blog-card-title\">\u3010PHP\u5165\u9580\u3011\u30eb\u30fc\u30d7\u3092break\u3067\u7d42\u4e86\u3059\u308b(foreach, for, while)<\/div>\n                    <div class=\"blog-card-update-date\">\u66f4\u65b0\u65e5\uff1a2024\u5e745\u67086\u65e5<\/div>\n                    <\/div>\n                <\/div>\n                <\/div>\n            <\/a>\n            <\/p>\n<h3>if\u6587\u306e\u30cd\u30b9\u30c8<\/h3>\n<p>if\u6587\u306f\u30cd\u30b9\u30c8\u3068\u3088\u3070\u308c\u308b\u591a\u91cd\u69cb\u9020\u3067if\u6587\u306e\u51e6\u7406\u306e\u4e2d\u306bif\u6587\u3092\u8a18\u8ff0\u3059\u308b\u3053\u3068\u304c\u53ef\u80fd\u3067\u3059\u3002<\/p>\n<p>\u4ee5\u4e0b\u306e\u30b5\u30f3\u30d7\u30eb\u3067\u306f\u3001if\u6587\u3092\u30cd\u30b9\u30c8\u3057\u3066\u305d\u308c\u305e\u308c\u5024\u3092\u6bd4\u8f03\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n<pre class=\"lang:php decode:true \">&lt;?php\r\n\r\n$value1 = 100;\r\n$value2 = 200;\r\n$value3 = 200;\r\n\r\nif ( $value1 &lt; $value2){\r\n  echo 'value1\u3088\u308avalue2\u304c\u5927\u304d\u3044';\r\n  echo '&lt;br&gt;';\r\n  if ( $value2 == $value3){\r\n    echo 'value2\u3068value3\u306f\u7b49\u3057\u3044';\r\n  }\r\n}\r\n\r\n?&gt;\r\n<\/pre>\n<pre class=\"striped:false marking:false ranges:false nums:false nums-toggle:false lang:default decode:true \">\r\nvalue1\u3088\u308avalue2\u304c\u5927\u304d\u3044\r\nvalue2\u3068value3\u306f\u7b49\u3057\u3044\r\n<\/pre>\n<p>if\u6587\u306e\u30cd\u30b9\u30c8\u306f\u3001\u591a\u7528\u3057\u3059\u304e\u3066\u4f55\u91cd\u306b\u3082if\u6587\u304c\u91cd\u306a\u308b\u3068\u51e6\u7406\u304c\u5206\u304b\u308a\u3065\u3089\u304f\u306a\u308a\u307e\u3059\u3002\u53ef\u8aad\u6027\u3084\u30e1\u30f3\u30c6\u30f3\u30ca\u30f3\u30b9\u306e\u9762\u304b\u3089\u3082\u3001if\u6587\u306e\u30cd\u30b9\u30c8\u306f\u591a\u7528\u3057\u3059\u304e\u306a\u3044\u3088\u3046\u306b\u6ce8\u610f\u3057\u307e\u3057\u3087\u3046\u3002<\/p>\n<h3>elseif\u6587\u306e\u4f7f\u3044\u65b9<\/h3>\n<p>if\u6587\u306felseif\u307e\u305f\u306felse if\u3092\u4f7f\u7528\u3057\u3066\u6761\u4ef6\u3092\u5206\u5c90\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<br \/>\n\u203bPHP\u3067\u306felseif\u3068else if(else\u3068if\u306e\u9593\u306b\u534a\u89d2\u30b9\u30da\u30fc\u30b9)\u306e\u3069\u3061\u3089\u3092\u4f7f\u7528\u3057\u3066\u3082\u69cb\u3044\u307e\u305b\u3093\u3002<\/p>\n<p>\u307e\u305f\u3001if\u6587\u306f\u8907\u6570\u5206\u5c90\u306e\u5834\u5408\u6700\u5f8c\u306e\u6761\u4ef6\u306b\u306felse\u3092\u6307\u5b9a\u3059\u308b\u306e\u304c\u6163\u4f8b\u3068\u306a\u3063\u3066\u3044\u307e\u3059\u3002<\/p>\n<pre class=\"striped:false marking:false ranges:false nums:false nums-toggle:false lang:default decode:true \">if ($a == $b){\r\n  echo '$a\u3068$b\u306f\u7b49\u3057\u3044';\r\n}elseif ($a &lt; $b){\r\n  echo '$a\u3088\u308a$b\u306e\u307b\u3046\u304c\u5927\u304d\u3044';\r\n}else{\r\n  echo '$a\u306f$b\u3088\u308a\u5927\u304d\u3044';\r\n}<\/pre>\n<p>\u2191\u306e\u6761\u4ef6\u5f0f\u3067\u306f\u3001<\/p>\n<ul>\n<li>if\u306e\u6761\u4ef6\u5f0f\u304c\u771f\u306a\u3089if\u306e\u51e6\u7406\u3092\u5b9f\u884c<\/li>\n<li>if\u306e\u6761\u4ef6\u5f0f\u304c\u507d\u3067elseif\u306e\u6761\u4ef6\u5f0f\u304c\u771f\u306a\u3089elseif\u306e\u51e6\u7406\u3092\u5b9f\u884c<\/li>\n<li>elseif\u306e\u6761\u4ef6\u5f0f\u3082\u507d\u306a\u3089else\u306e\u51e6\u7406\u3092\u5b9f\u884c<\/li>\n<\/ul>\n<p>\u3068\u306a\u308a\u307e\u3059\u3002<\/p>\n<p>\u5b9f\u969b\u306belseif\u3092\u4f7f\u7528\u3057\u305f\u8907\u6570\u6761\u4ef6\u306e\u30b5\u30f3\u30d7\u30eb\u3092\u4ee5\u4e0b\u306b\u8a18\u8ff0\u3057\u307e\u3059\u3002<\/p>\n<pre class=\"lang:php decode:true \">\r\n<?php\r\n\r\n$value1 = 200;\r\n$value2 = 100;\r\n\r\nif ($value1 == $value2){\r\n  echo 'value1\u3068value2\u306f\u7b49\u3057\u3044';\r\n}elseif($value1 &gt; $value2){\r\n  echo 'value1\u306fvalue2\u3088\u308a\u5927\u304d\u3044';\r\n}else{\r\n  echo 'value1\u306fvalue2\u3088\u308a\u5c0f\u3055\u3044';\r\n}\r\n\r\n?>\r\n<\/pre>\n<pre class=\"lang:php decode:true \">value1\u306fvalue2\u3088\u308a\u5927\u304d\u3044<\/pre>\n<p>if\u6587\u306e\u6761\u4ef6\u304c\u6e80\u305f\u3055\u308c\u306a\u304b\u3063\u305f\u3068\u304d\u306b\u4ed6\u306e\u51e6\u7406\u3092\u5b9f\u884c\u3057\u305f\u3044\u5834\u5408\u3001\u3064\u307e\u308a\u6761\u4ef6\u5f0f\u306e\u771f\u507d\u306e\u7d50\u679c\u3067\u51e6\u7406\u3092\u5206\u5c90\u3057\u305f\u3044\u5834\u5408\u306f\u3001\u9593\u306belseif\u3092\u631f\u307e\u306a\u3044\u3067\u3001if~else\u306e\u5f62\u5f0f\u3067\u8a18\u8ff0\u3059\u308b\u3053\u3068\u3082\u53ef\u80fd\u3067\u3059\u3002<\/p>\n<p>else\u306f\u3001if\u6587\u306b\u304a\u3051\u308b\u5f0f\u306e\u7d50\u679c\u304ctrue\u3067\u306f\u306a\u304ffalse\u306e\u5834\u5408\u306b\u51e6\u7406\u3092\u5b9f\u884c\u3059\u308b\u305f\u3081\u306bif\u6587\u3092\u62e1\u5f35\u3057\u307e\u3059\u3002<\/p>\n<p>\u4ee5\u4e0b\u306bif~else\u6587\u3092\u4f7f\u7528\u3059\u308b\u65b9\u6cd5\u3092\u8a18\u8ff0\u3057\u307e\u3059\u3002<\/p>\n<pre class=\"lang:php decode:true \">\r\n<?php\r\n\r\n$value1 = 300;\r\n$value2 = 200;\r\nif ( $value1 &lt; $value2){\r\n  echo 'value1\u3088\u308avalue2\u304c\u5927\u304d\u3044';\r\n}else{\r\n  echo 'value1\u3088\u308avalue2\u304c\u5c0f\u3055\u3044';\r\n}\r\n\r\n?>\r\n<\/pre>\n<pre class=\"lang:php decode:true \">value1\u3088\u308avalue2\u304c\u5c0f\u3055\u3044<\/pre>\n<h2>if\u6587\u306e\u5fdc\u7528<\/h2>\n<h3>\u6bd4\u8f03\u6f14\u7b97\u5b50\u306e\u4f7f\u3044\u65b9<\/h3>\n<p>\u3053\u3053\u3067\u306f\u3001if\u6587\u306e\u6761\u4ef6\u5f0f\u3067\u4f7f\u7528\u3067\u304d\u308b\u6bd4\u8f03\u6f14\u7b97\u5b50\u3092\u7d39\u4ecb\u3057\u307e\u3059\u3002<\/p>\n<div class=\"box01\">\n<ul>\n<li>\u7b49\u3057\u3044\uff1a$\u50241 == $\u50242<\/li>\n<\/ul>\n<p>$\u50241 \u304c $\u50242 \u306b\u7b49\u3057\u3044\u6642\u306bTRUE\u3092\u8fd4\u3057\u307e\u3059\u3002<\/p>\n<ul>\n<li>\u7b49\u3057\u3044\uff1a$\u50241 === $\u50242<\/li>\n<\/ul>\n<p>$\u50241 \u304c $\u50242 \u306b\u7b49\u3057\u3044\u3001\u304a\u3088\u3073\u540c\u3058\u578b\u306e\u5834\u5408\u306bTRUE\u3092\u8fd4\u3057\u307e\u3059\u3002<\/p>\n<ul>\n<li>\u7b49\u3057\u304f\u306a\u3044\uff1a$\u50241 != $\u50242<\/li>\n<\/ul>\n<p>$\u50241 \u304c $\u50242 \u306b\u7b49\u3057\u304f\u306a\u3044\u5834\u5408\u306bTRUE\u3092\u8fd4\u3057\u307e\u3059\u3002<\/p>\n<ul>\n<li>\u7b49\u3057\u304f\u306a\u3044\uff1a$\u50241 <> $\u50242<\/li>\n<\/ul>\n<p>$\u50241 \u304c $\u50242 \u306b\u7b49\u3057\u304f\u306a\u3044\u5834\u5408\u306bTRUE\u3092\u8fd4\u3057\u307e\u3059\u3002<\/p>\n<ul>\n<li>\u7b49\u3057\u304f\u306a\u3044\uff1a$\u50241 !== $\u50242<\/li>\n<\/ul>\n<p>$\u50241 \u304c $\u50242 \u3068\u7b49\u3057\u304f\u306a\u3044\u3001\u304a\u3088\u3073\u540c\u3058\u578b\u3067\u306a\u3044\u5834\u5408\u306bTRUE\u3092\u8fd4\u3057\u307e\u3059\u3002<\/p>\n<ul>\n<li>\u3088\u308a\u5c11\u306a\u3044\uff1a$\u50241 < $\u50242<\/li>\n<\/ul>\n<p>$\u50241 \u304c $\u50242 \u3088\u308a\u5c11\u306a\u3044\u6642\u306bTRUE\u3092\u8fd4\u3057\u307e\u3059\u3002<\/p>\n<ul>\n<li>\u3088\u308a\u591a\u3044\uff1a$\u50241 > $\u50242<\/li>\n<\/ul>\n<p>$\u50241 \u304c $\u50242 \u3088\u308a\u591a\u3044\u6642\u306bTRUE\u3092\u8fd4\u3057\u307e\u3059\u3002<\/p>\n<ul>\n<li>\u3088\u308a\u5c11\u306a\u3044\u304b\u7b49\u3057\u3044\uff1a$\u50241 <= $\u50242<\/li>\n<\/ul>\n<p>$\u50241 \u304c $\u50242 \u3088\u308a\u5c11\u306a\u3044\u304b\u7b49\u3057\u3044\u6642\u306bTRUE\u3092\u8fd4\u3057\u307e\u3059\u3002<\/p>\n<ul>\n<li>\u3088\u308a\u591a\u3044\u304b\u7b49\u3057\u3044\uff1a$\u50241 >= $\u50242<\/li>\n<\/ul>\n<p>$\u50241 \u304c $\u50242 \u3088\u308a\u591a\u3044\u304b\u7b49\u3057\u3044\u6642\u306bTRUE\u3092\u8fd4\u3057\u307e\u3059\u3002<br \/>\n<\/div><\/p>\n<p>\u4ee5\u4e0b\u306b\u6bd4\u8f03\u6f14\u7b97\u5b50\u3092\u4f7f\u7528\u3057\u305f\u7c21\u5358\u306a\u30b5\u30f3\u30d7\u30eb\u3092\u7d39\u4ecb\u3057\u307e\u3059\u3002<\/p>\n<pre class=\"lang:php decode:true \">&lt;?php\r\n\r\n$value1 = 100;\r\n$value2 = '100';\r\n\r\n\/\/\u578b\u3092\u6bd4\u8f03\u3059\u308b\r\nif ($value1 === $value2){\r\n  echo 'value1\u3068value2\u306f\u7b49\u3057\u3044\u3067\u3059\u3002';\r\n}else{\r\n  echo 'value1\u3068value2\u306f\u7b49\u3057\u304f\u3042\u308a\u307e\u305b\u3093\u3002';\r\n}\r\n\r\necho '&lt;br&gt;';\r\n\r\n\/\/\u4e00\u81f4\u3057\u306a\u3044\u304b\u6bd4\u8f03\u3059\u308b\r\nif ($value1 !== $value2){\r\n  echo 'value1\u3068value2\u306f\u7b49\u3057\u304f\u3042\u308a\u307e\u305b\u3093\u3002';\r\n}else{\r\n  echo 'value1\u3068value2\u306f\u7b49\u3057\u3044\u3067\u3059\u3002';\r\n}\r\n\r\n?&gt;\r\n<\/pre>\n<pre class=\"striped:false marking:false ranges:false nums:false nums-toggle:false lang:default decode:true \">\r\nvalue1\u3068value2\u306f\u7b49\u3057\u304f\u3042\u308a\u307e\u305b\u3093\u3002\r\nvalue1\u3068value2\u306f\u7b49\u3057\u304f\u3042\u308a\u307e\u305b\u3093\u3002\r\n<\/pre>\n<h3>\u8ad6\u7406\u6f14\u7b97\u5b50\u306e\u4f7f\u3044\u65b9<\/h3>\n<p>\u3053\u3053\u3067\u306f\u3001if\u6587\u306e\u6761\u4ef6\u5f0f\u3067\u4f7f\u7528\u3067\u304d\u308b\u8ad6\u7406\u6f14\u7b97\u5b50\u3092\u7d39\u4ecb\u3057\u307e\u3059\u3002<\/p>\n<div class=\"box01\">\n<ul>\n<li>\u8ad6\u7406\u7a4d\uff1a$\u50241 and $\u50242<\/li>\n<\/ul>\n<p>$\u50241 \u304a\u3088\u3073 $\u50242 \u304c\u5171\u306bTRUE\u306e\u5834\u5408\u306bTRUE\u3092\u8fd4\u3057\u307e\u3059\u3002<\/p>\n<ul>\n<li>\u8ad6\u7406\u548c\uff1a$\u50241 or $\u50242<\/li>\n<\/ul>\n<p>$\u50241 \u307e\u305f\u306f $\u50242 \u306e\u3069\u3061\u3089\u304b\u304cTRUE\u306e\u5834\u5408\u306bTRUE\u3092\u8fd4\u3057\u307e\u3059\u3002<\/p>\n<ul>\n<li>\u6392\u4ed6\u7684\u8ad6\u7406\u548c\uff1a$\u50241 xor $\u50242<\/li>\n<\/ul>\n<p>$\u50241 \u307e\u305f\u306f $\u50242 \u306e\u3069\u3061\u3089\u304b\u304cTRUE\u3067\u304b\u3064\u4e21\u65b9\u3068\u3082TRUE\u3067\u306a\u3044\u5834\u5408\u306bTRUE\u3092\u8fd4\u3057\u307e\u3059\u3002<\/p>\n<ul>\n<li>\u5426\u5b9a\uff1a! $\u50241<\/li>\n<\/ul>\n<p>$\u50241 \u304c TRUE\u3067\u306a\u3044\u5834\u5408\u306bTRUE\u3092\u8fd4\u3057\u307e\u3059\u3002<\/p>\n<ul>\n<li>\u8ad6\u7406\u7a4d\uff1a$\u50241 &#038;&#038; $\u50242<\/li>\n<\/ul>\n<p>$\u50241 \u304a\u3088\u3073 $\u50242 \u304c\u5171\u306bTRUE\u306e\u5834\u5408\u306bTRUE\u3092\u8fd4\u3057\u307e\u3059\u3002<\/p>\n<ul>\n<li>\u8ad6\u7406\u548c\uff1a$\u50241 || $\u50242<\/li>\n<\/ul>\n<p>$\u50241 \u307e\u305f\u306f $\u50242 \u306e\u3069\u3061\u3089\u304b\u304cTRUE\u306e\u5834\u5408\u306bTRUE\u3092\u8fd4\u3057\u307e\u3059\u3002<\/p>\n<ul>\n<\/div><\/p>\n<p>\u4ee5\u4e0b\u306b\u8ad6\u7406\u6f14\u7b97\u5b50\u306e\u8ad6\u7406\u7a4d\u3068\u5426\u5b9a\u3092\u4f7f\u7528\u3057\u305f\u7c21\u5358\u306a\u30b5\u30f3\u30d7\u30eb\u3092\u7d39\u4ecb\u3057\u307e\u3059\u3002<\/p>\n<pre class=\"lang:php decode:true \">&lt;?php\r\n\r\n$value_array1 = [100, 100];\r\n$value_array2 = [200, 200];\r\n\r\n\/\/\u914d\u5217\u306e\u5404\u8981\u7d20\u306e\u5024\u3092\u305d\u308c\u305e\u308c\u6bd4\u8f03\u3059\u308b\r\nif (($value_array1[0] == $value_array1[1]) and\r\n    ($value_array2[0] == $value_array2[1])){\r\n\r\n  echo '\u3068\u3082\u306b\u7b49\u3057\u3044\u3067\u3059';\r\n}\r\n\r\necho '&lt;br&gt;';\r\n\r\n$value = 100;\r\n\/\/\u5024\u304c\u914d\u5217\u304b\u5224\u65ad\u3059\u308b\r\nif (!is_array($value)){\r\n  echo 'value\u306f\u914d\u5217\u3067\u306f\u3042\u308a\u307e\u305b\u3093';\r\n}\r\n\r\n?&gt;\r\n<\/pre>\n<pre class=\"striped:false marking:false ranges:false nums:false nums-toggle:false lang:default decode:true \">\r\n\u3068\u3082\u306b\u7b49\u3057\u3044\u3067\u3059\r\nvalue\u306f\u914d\u5217\u3067\u306f\u3042\u308a\u307e\u305b\u3093\r\n<\/pre>\n<h2>PHP\u306b\u3064\u3044\u3066\u3082\u3063\u3068\u77e5\u308a\u305f\u3044\u65b9\u3078<\/h2>\n<p>\u3044\u304b\u304c\u3067\u3057\u305f\u3067\u3057\u3087\u3046\u304b\uff1f<\/p>\n<ul>\n<li>PHP\u306b\u3064\u3044\u3066\u5b9f\u306f\u3044\u307e\u3044\u3061\u308f\u304b\u3063\u3066\u3044\u306a\u3044\u2026<\/li>\n<li>\u3082\u3063\u3068PHP\u306b\u3064\u3044\u3066\u8a73\u3057\u304f\u77e5\u308a\u305f\u3044\uff01<\/li>\n<\/ul>\n<p>\u3068\u601d\u3063\u3066\u3044\u308b\u65b9\u306f\u4ee5\u4e0b\u306e\u8a18\u4e8b\u3082\u53c2\u8003\u306b\u3057\u3066\u307f\u3066\u304f\u3060\u3055\u3044\u3002<br \/>\n            <a href=\"https:\/\/www.sejuku.net\/blog\/4097\" class=\"blog-card-anchor\">\n                <div class=\"blog-card\">\n                <div class=\"blog-card-content\">\n                    <div class=\"blog-card-thumbnail\">\n                    <img decoding=\"async\" class=\"blog-card-thumbnail-img\" src=\"https:\/\/www.sejuku.net\/blog\/wp-content\/uploads\/2021\/01\/howto-02-3-150x85.jpg\">\n                    <\/div>\n                    <div class=\"blog-card-title-wrap\">\n                    <div class=\"blog-card-title\">PHP\u3068\u306f\u4f55\u304b\u308f\u304b\u308a\u3084\u3059\u304f\u89e3\u8aac\uff01\u3067\u304d\u308b\u3053\u3068\u3084\u5c06\u6765\u6027\u3001\u5b66\u7fd2\u65b9\u6cd5\u3082\u7d39\u4ecb<\/div>\n                    <div class=\"blog-card-update-date\">\u66f4\u65b0\u65e5\uff1a2024\u5e749\u670824\u65e5<\/div>\n                    <\/div>\n                <\/div>\n                <\/div>\n            <\/a>\n            <\/p>\n<h2>\u307e\u3068\u3081<\/h2>\n<p>\u3053\u3053\u3067\u306f\u3001if\u306e\u57fa\u672c\u3084elseif\u306e\u57fa\u672c\u7684\u306a\u4f7f\u3044\u65b9\u3001\u30cd\u30b9\u30c8\u306e\u65b9\u6cd5\u3001\u6bd4\u8f03\u6f14\u7b97\u5b50\u3084\u8ad6\u7406\u6f14\u7b97\u5b50\u306e\u4f7f\u3044\u65b9\u3001if\u301celse\u6587\u306e\u4f7f\u3044\u65b9\u306a\u3069\u3092\u7d39\u4ecb\u3057\u307e\u3057\u305f\u3002<\/p>\n<p>if\u6587\u306f\u5024\u3092\u6bd4\u8f03\u3057\u3066\u51e6\u7406\u3092\u5206\u5c90\u3059\u308b\u3068\u304d\u306b\u3088\u304f\u4f7f\u7528\u3057\u307e\u3059\u3002\u3082\u3057if\u6587\u306e\u4f7f\u3044\u65b9\u3092\u5fd8\u308c\u3066\u3057\u307e\u3063\u305f\u3089\u3001\u3053\u306e\u8a18\u4e8b\u3092\u601d\u3044\u51fa\u3057\u3066\u304f\u3060\u3055\u3044\u306d\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"<p>PHP\u3067if\u6587\uff08\u6761\u4ef6\u5f0f\uff09\u306e\u4f7f\u3044\u65b9\u3092\u77e5\u308a\u305f\u3044 if\u6587\u3092\u4f7f\u3044\u3053\u306a\u305b\u308b\u3088\u3046\u306b\u306a\u308a\u305f\u3044 PHP\u306b\u9650\u3089\u305a\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u8a00\u8a9e\u3067\u306f\u3001\u6761\u4ef6\u306b\u3088\u3063\u3066\u51e6\u7406\u3092\u5206\u5c90\u3055\u305b\u308b\u305f\u3081\u306eif\u6587\u304c\u3042\u308a\u307e\u3059\u3002 if\u6587\u306f\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u3092\u3059\u308b\u4e0a\u3067\u6700\u3082\u57fa\u672c\u7684\u306a\u51e6\u7406 [&hellip;]<\/p>\n","protected":false},"author":16433,"featured_media":103640,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"inline_featured_image":false,"swell_btn_cv_data":"","footnotes":""},"categories":[2348],"tags":[38],"class_list":["post-22784","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-php-study","tag-php"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.6 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>\u3010PHP\u5165\u9580\u3011if\u6587\u306b\u3088\u308b\u6761\u4ef6\u5206\u5c90\u306e\u4f7f\u3044\u65b9\u3092\u57fa\u790e\u304b\u3089\u5fdc\u7528\u307e\u3067 | \u4f8d\u30a8\u30f3\u30b8\u30cb\u30a2\u30d6\u30ed\u30b0<\/title>\n<meta name=\"description\" content=\"\u3053\u306e\u8a18\u4e8b\u3067\u306f\u300c \u3010PHP\u5165\u9580\u3011if\u6587\u306b\u3088\u308b\u6761\u4ef6\u5206\u5c90\u306e\u4f7f\u3044\u65b9\u3092\u57fa\u790e\u304b\u3089\u5fdc\u7528\u307e\u3067 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