php数组如何修改值

php数组修改值的方法：首先创建一个PHP示例文件；然后通过“foreach($pid_arr_t as $key=>$value){$value['opid'] = 123;...}”方法修改数组中某个元素值即可。

本教程操作环境：windows10系统、php5.6，本文适用于所有品牌的电脑。

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php 修改数据中某个元素值，其它元素值不变。

循环数组

array(8) {   [0] => array(10) {     ["opid"] => int(0)     ["pid"] => int(11)     ["price"] => string(4) "0.10"     ["controller"] => string(4) "Live"     ["type_mold"] => int(1)     ["img"] => string(0) ""     ["description"] => string(4) "1212"     ["title"] => string(12) "测试回放"     ["user_id"] => int(51)     ["limit"] => string(19) "2020-01-25 15:03:14"   }   [1] => array(10) {     ["opid"] => int(0)     ["pid"] => int(10)     ["price"] => string(4) "0.10"     ["controller"] => string(4) "Live"     ["type_mold"] => int(1)     ["img"] => string(0) ""     ["description"] => string(2) "12"     ["title"] => string(12) "线上测试"     ["user_id"] => int(51)     ["limit"] => string(19) "2019-10-17 15:03:14"   }   [2] => array(10) {     ["opid"] => int(0)     ["pid"] => int(3)     ["price"] => string(4) "1.00"     ["controller"] => string(4) "Live"     ["type_mold"] => int(1)     ["img"] => string(0) ""     ["description"] => string(4) "1212"     ["title"] => string(21) "测试保长时直播"     ["user_id"] => int(51)     ["limit"] => string(19) "2019-10-17 15:03:14"   }   [3] => array(10) {     ["opid"] => int(0)     ["pid"] => int(2)     ["price"] => string(4) "0.10"     ["controller"] => string(5) "Video"     ["type_mold"] => int(2)     ["img"] => string(0) ""     ["description"] => string(130) "最近长安刚刚公布了全新中型SUV CS85的预售价格，售价区间为14.99-17.19万元，成为长安首款轿跑SUV。"     ["title"] => string(142) "测试点播最近长安刚刚公布了全新中型SUV CS85的预售价格，售价区间为14.99-17.19万元，成为长安首款轿跑SUV。"     ["user_id"] => int(51)     ["limit"] => string(19) "2019-10-17 15:03:14"   }   [4] => array(10) {     ["opid"] => int(0)     ["pid"] => int(8)     ["price"] => string(4) "0.00"     ["controller"] => string(4) "Shop"     ["type_mold"] => int(4)     ["img"] => string(0) ""     ["description"] => string(0) ""     ["title"] => string(3) "111"     ["user_id"] => int(51)     ["limit"] => string(19) "2019-10-17 15:03:14"   }   [5] => array(10) {     ["opid"] => int(0)     ["pid"] => int(61)     ["price"] => string(4) "0.00"     ["controller"] => string(9) "Testpaper"     ["type_mold"] => int(3)     ["img"] => string(45) "20190403/c378d2084ec9c3f05ceab36c00ac67a4.png"     ["description"] => string(6) "健康"     ["title"] => string(12) "健康管理"     ["user_id"] => int(51)     ["limit"] => string(19) "2022-01-14 15:03:14"   }   [6] => array(10) {     ["opid"] => int(0)     ["pid"] => int(55)     ["price"] => string(4) "0.00"     ["controller"] => string(9) "Testpaper"     ["type_mold"] => int(3)     ["img"] => string(45) "20190330/af4db555769d71589ae163bfd0a3c05b.jpg"     ["description"] => string(3) "111"     ["title"] => string(27) "模板导入试卷测试一"     ["user_id"] => int(51)     ["limit"] => string(19) "2019-05-01 15:03:14"   }   [7] => array(10) {     ["opid"] => int(0)     ["pid"] => int(62)     ["price"] => string(7) "1000.00"     ["controller"] => string(9) "Testpaper"     ["type_mold"] => int(3)     ["img"] => string(45) "20190330/f1cc9c7df38108c505338a529e3d06a6.jpg"     ["description"] => string(18) "法学概论201704"     ["title"] => string(18) "法学概论201704"     ["user_id"] => int(51)     ["limit"] => string(19) "2019-07-29 15:03:14"   } }

foreach($pid_arr_t as $key=>$value){   $value['opid'] = 123;   $pid_arr_t[$key] = $value;              }

只有修改opid的元素值.

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