\u4e2d\u8eab\u3092\u30af\u30ea\u30a2\u3057\u3066\u304a\u304f\u4e0a\u3067\u3061\u3087\u304f\u3061\u3087\u304f\u4f7f\u3046unset<\/p>\n
\u3057\u304b\u3057\u3001\u3053\u3044\u3064\u306b\u306f\u3061\u3087\u3063\u3068\u30af\u30bb\u304c\u3042\u308b\u3002<\/p>\n
\u4ee5\u4e0b\u306e\u3088\u3046\u306bglobal\u5909\u6570\u3092\u95a2\u6570\u306e\u4e2d\u3067\u5909\u66f4\u3059\u308b\u3002<\/p>\n
\u305d\u3046\u3059\u308b\u3068unset\u3057\u305f\u6642\u70b9\u3067\u3001$g_dummy\u306f\u30ed\u30fc\u30ab\u30eb\u5909\u6570\u306b\u306a\u308a\u3001\u305d\u308c\u4ee5\u964d\u306f\u3059\u3079\u3066\u30ed\u30fc\u30ab\u30eb\u5909\u6570\u3068\u3057\u3066\u632f\u821e\u308f\u308c\u308b\u3002<\/p>\n
header('Content-type: text\/plain; charset=utf-8');\r\nfunction echoLine($line){ echo $line . \"\\r\\n\"; }\r\n\r\n$g_dummy = 0;\r\n\r\nunsetTest();\r\nechoLine($g_dummy);\r\n\r\nfunction unsetTest(){\r\n\tglobal $g_dummy;\r\n\t$g_dummy++;\r\n\techoLine($g_dummy);\r\n\t\r\n\tunset($g_dummy);\t\/\/\u3053\u306e\u6642\u70b9\u3067$g_dummy\u304c\u30b0\u30ed\u30fc\u30d0\u30eb\u3067\u306a\u304f\u306a\u308b\u3002\r\n\t$g_dummy = 3;\r\n\techoLine($g_dummy);\r\n}<\/pre>\n\u7d50\u679c\uff1a<\/p>\n
1\r\n3\r\n1<\/pre>\n\u53c2\u7167\u6e21\u3057<\/h2>\n
global\u5909\u6570\u306f\u3081\u3063\u305f\u306b\u4f7f\u308f\u306a\u3044\u3057\u3001\u300c\u3078\uff5e\u300d\u3067\u6e08\u3093\u3067\u305f\u306e\u3060\u304c\u3001\u4ee5\u4e0b\u3092\u898b\u308b\u3068\u3002<\/p>\n
header('Content-type: text\/plain; charset=utf-8'); \r\nfunction echoLine($line){ echo $line . \"\\r\\n\"; }\r\n\r\n$dummy = 0;\r\n\r\nunsetTest($dummy);\r\nechoLine($dummy);\r\n\r\nfunction unsetTest(&$argument){\r\n\t$argument++;\r\n\techoLine($argument);\r\n\t\r\n\tunset($argument);\t\/\/\u3053\u306e\u6642\u70b9\u3067\u30ed\u30fc\u30ab\u30eb\u5909\u6570\u306b\u7f6e\u304d\u63db\u308f\u308b\u3002\r\n\t$argument = 3;\r\n\techoLine($argument);\r\n}<\/pre>\n\u7d50\u679c<\/p>\n
1\r\n3\r\n1<\/pre>\n\u306a\u3093\u3060\u3068\u30fb\u30fb\u30fb\uff01\uff1f<\/p>\n
\u914d\u5217\u306e\u5834\u5408<\/h3>\nheader('Content-type: text\/plain; charset=utf-8');\r\n\r\n$dummy = [ 1, 2, 3 ];\r\n\r\nunsetTest($dummy);\r\nprint_r($dummy);\r\n\r\nfunction unsetTest(&$argument){\r\n\t$argument[0]++;\r\n\tprint_r($argument);\r\n\t\r\n\tunset($argument[0]);\t\/\/\u914d\u5217\u306e\u4e00\u90e8\u3092unset\u3057\u3066\u3082\u7f6e\u304d\u63db\u308f\u3089\u305a\u3001\u53cd\u6620\u3055\u308c\u308b\u3002\r\n\tprint_r($argument);\r\n\t\r\n\tunset($argument);\t\/\/\u3053\u306e\u6642\u70b9\u3067\u30ed\u30fc\u30ab\u30eb\u5909\u6570\u306b\u7f6e\u304d\u63db\u308f\u308b\u3002\u4ee5\u964d\u306e$argument\u306f\u5225\u7269\u306b\u306a\u308b\u3002\r\n\t$argument[0] = 5;\r\n\tprint_r($argument);\r\n\t\r\n}<\/pre>\n\u7d50\u679c\uff1a<\/p>\n
Array\r\n(\r\n [0] => 2\r\n [1] => 2\r\n [2] => 3\r\n)\r\nArray\r\n(\r\n [1] => 2\r\n [2] => 3\r\n)\r\nArray\r\n(\r\n [0] => 5\r\n)\r\nArray\r\n(\r\n [1] => 2\r\n [2] => 3\r\n)<\/pre>\n\u3093\uff5e\u3001\u914d\u5217\u306e\u4e2d\u8eab\u306funset\u3057\u3066\u3082\u7f6e\u304d\u63db\u308f\u3089\u306a\u3044\u6a21\u69d8\u3002<\/p>\n
<\/p>\n
\u30af\u30e9\u30b9\u306e\u5834\u5408<\/h3>\nheader('Content-type: text\/plain; charset=utf-8');\r\n\r\n$myClass = new MyClass();\r\n\r\nunsetTest($myClass);\r\nprint_r($myClass);\r\n\r\nfunction unsetTest($argument){\r\n\t$argument->dummy = 2;\r\n\tprint_r($argument);\r\n\t\r\n\tunset($argument->dummy);\t\/\/\u914d\u5217\u306e\u4e00\u90e8\u3092unset\u3057\u3066\u3082\u7f6e\u304d\u63db\u308f\u3089\u305a\u3001\u53cd\u6620\u3055\u308c\u308b\u3002\r\n\tprint_r($argument);\r\n\t\r\n\t$argument->dummy = -1;\r\n\t\r\n}\r\n\r\nclass MyClass{\r\n\tpublic $dummy = 0;\r\n\tpublic $dummyArray = [1,2,3];\r\n}\r\n<\/pre>\n\u7d50\u679c\uff1a<\/p>\n
MyClass Object\r\n(\r\n [dummy] => 2\r\n)\r\nMyClass Object\r\n(\r\n)\r\nMyClass Object\r\n(\r\n [dummy] => -1\r\n)<\/pre>\n\u3093\uff5e\u3001\u7279\u306b\u9055\u548c\u611f\u306a\u3057\u3002<\/p>\n
<\/p>\n
\u5f15\u6570\u5b57\u4f53\u3092unset\u3059\u308b\u3068\u3001\u305d\u306e\u6642\u70b9\u3067\u30a2\u30c9\u30ec\u30b9\u304c\u30af\u30ea\u30a2\u3055\u308c\u308b\u304b\u3089\u3001\u5225\u7269\u306b\u306a\u308b\u3063\u3066\u3053\u3068\u3067\u3059\u306d\u3002<\/p>\n
\u307e\u3041\u3001\u3061\u3087\u3063\u3068\u6c17\u306b\u306a\u3063\u3066\u8abf\u3079\u305f\u3051\u3069\u666e\u901a\u306e\u52d5\u304d\u3060\u3063\u305f\u3002<\/p>\n
\u305f\u3060\u3001Global\u3092unset\u3057\u3066\u3082\u5143\u306eGlobal\u306e\u5024\u304c\u4fdd\u6301\u3055\u308c\u308b\u3063\u3066\u306e\u306f\u7279\u6b8a\u304b\u3082\u3002<\/p>\n
<\/p>\n
<\/p>\n
<\/p>\n
<\/p>\n","protected":false},"excerpt":{"rendered":"
\u4e2d\u8eab\u3092\u30af\u30ea\u30a2\u3057\u3066\u304a\u304f\u4e0a\u3067\u3061\u3087\u304f\u3061\u3087\u304f\u4f7f\u3046unset \u3057\u304b\u3057\u3001\u3053\u3044\u3064\u306b\u306f\u3061\u3087\u3063\u3068\u30af\u30bb\u304c\u3042\u308b\u3002 Global \u4ee5\u4e0b\u306e\u3088\u3046\u306bglobal\u5909\u6570\u3092\u95a2\u6570\u306e\u4e2d\u3067\u5909\u66f4\u3059\u308b\u3002 \u305d\u3046\u3059\u308b\u3068unset\u3057\u305f\u6642\u70b9\u3067\u3001$g_dummy\u306f\u30ed\u30fc\u30ab\u30eb\u5909\u6570… more