{"id":6,"date":"2025-03-05T14:06:14","date_gmt":"2025-03-05T06:06:14","guid":{"rendered":"https:\/\/www.zhaozhao123.cn\/php\/6.html"},"modified":"2025-03-05T14:06:14","modified_gmt":"2025-03-05T06:06:14","slug":"%e8%8e%b7%e5%8f%96%e6%95%b0%e7%bb%84%e4%b8%ad%e7%ac%ac%e4%b8%80%e4%b8%aa%e5%85%83%e7%b4%a0","status":"publish","type":"my1js","link":"https:\/\/www.zhaozhao123.cn\/php\/my1js\/6.html","title":{"rendered":"\u83b7\u53d6\u6570\u7ec4\u4e2d\u7b2c\u4e00\u4e2a\u5143\u7d20"},"content":{"rendered":"\n

\u5728 PHP \u4e2d\uff0c\u83b7\u53d6\u6570\u7ec4\u4e2d\u7684\u7b2c\u4e00\u4e2a\u5143\u7d20\u6709\u591a\u79cd\u65b9\u6cd5\u3002\u4ee5\u4e0b\u662f\u51e0\u79cd\u5e38\u89c1\u7684\u65b9\u5f0f\uff1a<\/p>\n\n\n\n

\n\n\n\n

\u65b9\u6cd5\u4e00\uff1a\u4f7f\u7528 reset()<\/code> \u51fd\u6570<\/h3>\n\n\n\n

reset()<\/code> \u51fd\u6570\u5c06\u6570\u7ec4\u7684\u5185\u90e8\u6307\u9488\u91cd\u7f6e\u5230\u7b2c\u4e00\u4e2a\u5143\u7d20\uff0c\u5e76\u8fd4\u56de\u8be5\u5143\u7d20\u7684\u503c\u3002<\/p>\n\n\n\n

$array = [10, 20, 30, 40];\n$firstElement = reset($array);\n\necho $firstElement; \/\/ \u8f93\u51fa: 10<\/code><\/pre>\n\n\n\n
\n\n\n\n
\u65b9\u6cd5\u4e8c\uff1a\u76f4\u63a5\u901a\u8fc7\u7d22\u5f15\u8bbf\u95ee<\/h3>\n\n\n\n
\u5982\u679c\u6570\u7ec4\u662f\u7d22\u5f15\u6570\u7ec4\uff08\u952e\u4e3a\u6570\u5b57\uff09\uff0c\u53ef\u4ee5\u76f4\u63a5\u901a\u8fc7\u7d22\u5f15 [0]<\/code> \u8bbf\u95ee\u7b2c\u4e00\u4e2a\u5143\u7d20\u3002<\/p>\n\n\n\n
$array = [10, 20, 30, 40];\n$firstElement = $array[0];\n\necho $firstElement; \/\/ \u8f93\u51fa: 10<\/code><\/pre>\n\n\n\n
\n\n\n\n
\u65b9\u6cd5\u4e09\uff1a\u4f7f\u7528 array_values()<\/code> \u548c\u7d22\u5f15\u8bbf\u95ee<\/h3>\n\n\n\n
\u5982\u679c\u6570\u7ec4\u662f\u5173\u8054\u6570\u7ec4\uff08\u952e\u4e3a\u5b57\u7b26\u4e32\uff09\uff0c\u53ef\u4ee5\u5148\u7528 array_values()<\/code> \u5c06\u6570\u7ec4\u8f6c\u6362\u4e3a\u7d22\u5f15\u6570\u7ec4\uff0c\u518d\u901a\u8fc7\u7d22\u5f15 [0]<\/code> \u8bbf\u95ee\u3002<\/p>\n\n\n\n
$array = ['a' => 10, 'b' => 20, 'c' => 30];\n$indexedArray = array_values($array);\n$firstElement = $indexedArray[0];\n\necho $firstElement; \/\/ \u8f93\u51fa: 10<\/code><\/pre>\n\n\n\n
\n\n\n\n
\u65b9\u6cd5\u56db\uff1a\u4f7f\u7528 current()<\/code> \u51fd\u6570<\/h3>\n\n\n\n
current()<\/code> \u51fd\u6570\u8fd4\u56de\u6570\u7ec4\u5f53\u524d\u6307\u9488\u6307\u5411\u7684\u5143\u7d20\u3002\u5982\u679c\u6570\u7ec4\u6307\u9488\u672a\u88ab\u79fb\u52a8\u8fc7\uff0c\u5b83\u4f1a\u8fd4\u56de\u7b2c\u4e00\u4e2a\u5143\u7d20\u3002<\/p>\n\n\n\n
$array = [10, 20, 30, 40];\n$firstElement = current($array);\n\necho $firstElement; \/\/ \u8f93\u51fa: 10<\/code><\/pre>\n\n\n\n
\n\n\n\n
\u65b9\u6cd5\u4e94\uff1a\u4f7f\u7528 array_shift()<\/code> \u51fd\u6570<\/h3>\n\n\n\n
array_shift()<\/code> \u4f1a\u79fb\u9664\u5e76\u8fd4\u56de\u6570\u7ec4\u7684\u7b2c\u4e00\u4e2a\u5143\u7d20\u3002\u6ce8\u610f\uff0c\u8fd9\u4f1a\u4fee\u6539\u539f\u6570\u7ec4\u3002<\/p>\n\n\n\n
$array = [10, 20, 30, 40];\n$firstElement = array_shift($array);\n\necho $firstElement; \/\/ \u8f93\u51fa: 10\nprint_r($array);    \/\/ \u8f93\u51fa: Array ( [0] => 20 [1] => 30 [2] => 40 )<\/code><\/pre>\n\n\n\n
\n\n\n\n
\u603b\u7ed3<\/h3>\n\n\n\n
    \n
  • \u5982\u679c\u6570\u7ec4\u662f\u7d22\u5f15\u6570\u7ec4\uff0c\u76f4\u63a5\u4f7f\u7528 $array[0]<\/code> \u662f\u6700\u7b80\u5355\u7684\u65b9\u5f0f\u3002<\/li>\n\n\n\n
  • \u5982\u679c\u6570\u7ec4\u662f\u5173\u8054\u6570\u7ec4\uff0c\u53ef\u4ee5\u4f7f\u7528 reset()<\/code> \u6216 array_values()<\/code> \u7ed3\u5408\u7d22\u5f15\u8bbf\u95ee\u3002<\/li>\n\n\n\n
  • \u5982\u679c\u9700\u8981\u4fdd\u6301\u539f\u6570\u7ec4\u4e0d\u53d8\uff0c\u907f\u514d\u4f7f\u7528 array_shift()<\/code>\u3002<\/li>\n<\/ul>\n\n\n\n
    \u6839\u636e\u4f60\u7684\u9700\u6c42\u9009\u62e9\u5408\u9002\u7684\u65b9\u6cd5\u5373\u53ef\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"
    \u5728 PHP \u4e2d\uff0c\u83b7\u53d6\u6570\u7ec4\u4e2d\u7684\u7b2c\u4e00\u4e2a\u5143\u7d20\u6709\u591a\u79cd\u65b9\u6cd5\u3002\u4ee5\u4e0b\u662f\u51e0\u79cd\u5e38\u89c1\u7684\u65b9\u5f0f\uff1a \u65b9\u6cd5\u4e00\uff1a\u4f7f\u7528 reset() \u51fd\u6570 reset() \u51fd\u6570\u5c06\u6570\u7ec4\u7684\u5185\u90e8\u6307\u9488\u91cd\u7f6e\u5230\u7b2c\u4e00\u4e2a\u5143\u7d20\uff0c\u5e76\u8fd4\u56de\u8be5\u5143\u7d20\u7684\u503c\u3002 \u65b9\u6cd5\u4e8c\uff1a\u76f4\u63a5\u901a\u8fc7\u7d22\u5f15\u8bbf\u95ee \u5982\u679c\u6570\u7ec4\u662f\u7d22\u5f15\u6570\u7ec4\uff08\u952e\u4e3a\u6570\u5b57\uff09\uff0c\u53ef\u4ee5\u76f4\u63a5\u901a\u8fc7\u7d22\u5f15 [0] \u8bbf\u95ee\u7b2c\u4e00\u4e2a\u5143\u7d20\u3002 \u65b9\u6cd5\u4e09\uff1a\u4f7f\u7528 array_valu..<\/p>\n","protected":false},"author":1,"featured_media":0,"menu_order":0,"template":"","meta":{"_acf_changed":false},"tags":[],"my1js2nav":[20],"tuisongtax":[],"class_list":["post-6","my1js","type-my1js","status-publish","hentry","my1js2nav-sz"],"acf":{"qian_art_seotitle":"","qian_art_seotitle_source":{"label":"SEO\u6807\u9898","type":"text","formatted_value":""},"qian_art_seokws":"","qian_art_seokws_source":{"label":"SEO\u5173\u952e\u8bcd","type":"text","formatted_value":""},"qian_art_stzhong":"","qian_art_stzhong_source":{"label":"\u4e2d | \u77ed\u6807\u9898","type":"text","formatted_value":""}},"_links":{"self":[{"href":"https:\/\/www.zhaozhao123.cn\/php\/wp-json\/wp\/v2\/my1js\/6","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.zhaozhao123.cn\/php\/wp-json\/wp\/v2\/my1js"}],"about":[{"href":"https:\/\/www.zhaozhao123.cn\/php\/wp-json\/wp\/v2\/types\/my1js"}],"author":[{"embeddable":true,"href":"https:\/\/www.zhaozhao123.cn\/php\/wp-json\/wp\/v2\/users\/1"}],"wp:attachment":[{"href":"https:\/\/www.zhaozhao123.cn\/php\/wp-json\/wp\/v2\/media?parent=6"}],"wp:term":[{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.zhaozhao123.cn\/php\/wp-json\/wp\/v2\/tags?post=6"},{"taxonomy":"my1js2nav","embeddable":true,"href":"https:\/\/www.zhaozhao123.cn\/php\/wp-json\/wp\/v2\/my1js2nav?post=6"},{"taxonomy":"tuisongtax","embeddable":true,"href":"https:\/\/www.zhaozhao123.cn\/php\/wp-json\/wp\/v2\/tuisongtax?post=6"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}