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[&＃39;opid&＃39;] = 123;…}”方法修改数组中某个元素值即可。
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" } }
方法：
foreach($pid_arr_t as $key=>$value){ $value[&＃39;opid&＃39;] = 123; $pid_arr_t[$key] = $value; }
只有修改opid的元素值.
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