数据类型:
{"game_id":"111","type":2,"num":504},{"game_id":"111","type":6,"num":8154},{"game_id":"111","type":41,"num":3426},{"game_id":"111","type":42,"num":45},{"game_id":"111","type":43,"num":1873}
需求:
把type=41 42 42的num相加 type 1 10相加
结果:
{"game_id":"111","type":2,"num":504},{"game_id":"111","type":6,"num":8154},{"game_id":"111","type":41,"num":5344}
code:
$str = '{"retCode":"0","retMsg":"成功","data":[{"game_id":"111","type":2,"num":504},{"game_id":"111","type":6,"num":8154},{"game_id":"111","type":41,"num":3426},{"game_id":"111","type":42,"num":45},{"game_id":"111","type":43,"num":1873},{"game_id":"119","type":1,"num":38},{"game_id":"119","type":2,"num":381},{"game_id":"119","type":6,"num":189},{"game_id":"119","type":10,"num":21},{"game_id":"120","type":2,"num":31},{"game_id":"120","type":6,"num":291},{"game_id":"120","type":41,"num":90},{"game_id":"120","type":43,"num":49},{"game_id":"127","type":1,"num":9},{"game_id":"127","type":2,"num":111},{"game_id":"127","type":6,"num":60},{"game_id":"129","type":1,"num":11},{"game_id":"129","type":2,"num":11},{"game_id":"129","type":6,"num":48},{"game_id":"129","type":10,"num":2},{"game_id":"130","type":6,"num":1},{"game_id":"137","type":2,"num":1},{"game_id":"139","type":2,"num":1387},{"game_id":"139","type":6,"num":3858},{"game_id":"139","type":10,"num":2358},{"game_id":"142","type":2,"num":32},{"game_id":"142","type":6,"num":948},{"game_id":"142","type":41,"num":330},{"game_id":"142","type":42,"num":3},{"game_id":"142","type":43,"num":47},{"game_id":"156","type":2,"num":11436},{"game_id":"156","type":6,"num":38135},{"game_id":"156","type":10,"num":22170},{"game_id":"165","type":6,"num":6},{"game_id":"165","type":41,"num":3},{"game_id":"165","type":43,"num":1},{"game_id":"50","type":2,"num":3},{"game_id":"8f093ab4ad19a509208a8104605c6e42","type":2,"num":281},{"game_id":"92","type":1,"num":26},{"game_id":"92","type":2,"num":186},{"game_id":"92","type":6,"num":153},{"game_id":"94","type":1,"num":538},{"game_id":"94","type":2,"num":3357},{"game_id":"94","type":6,"num":2847},{"game_id":"94","type":10,"num":74}]}';
$aaa = json_decode($str, true); $data = $aaa['data']; $new_array = array(); $array1 = array(41,42,43); $array2 = array(1,10); foreach($data as $v){ if(in_array($v['type'], $array2)){ if(isset($new_array[$v['game_id']][$array2[0]]['num'])){ $new_array[$v['game_id']][$array2[0]]['num'] += $v['num']; } else { $new_array[$v['game_id']][$array2[0]]['num'] = $v['num']; } }elseif (in_array($v['type'], $array1)) { if(isset($new_array[$v['game_id']][$array1[0]]['num'])){ $new_array[$v['game_id']][$array1[0]]['num'] += $v['num']; } else { $new_array[$v['game_id']][$array1[0]]['num'] = $v['num']; } }else{ if(isset($new_array[$v['game_id']][$v['type']]['num'])){ $new_array[$v['game_id']][$v['type']]['num'] += $v['num']; } else { $new_array[$v['game_id']][$v['type']]['num'] = $v['num']; } } } foreach($new_array as $k1 => $v1) { foreach($v1 as $k2 => $v2) { $new[$k1][] = array( 'game_id' => $k1, 'type' => $k2, 'num' => $v2['num'] ); } }
以上就介绍了 php 根据某数组key计算和,包括了方面的内容,希望对PHP教程有兴趣的朋友有所帮助。

PHP和Python各有优势,选择应基于项目需求。1.PHP适合web开发,语法简单,执行效率高。2.Python适用于数据科学和机器学习,语法简洁,库丰富。

PHP不是在消亡,而是在不断适应和进化。1)PHP从1994年起经历多次版本迭代,适应新技术趋势。2)目前广泛应用于电子商务、内容管理系统等领域。3)PHP8引入JIT编译器等功能,提升性能和现代化。4)使用OPcache和遵循PSR-12标准可优化性能和代码质量。

PHP的未来将通过适应新技术趋势和引入创新特性来实现:1)适应云计算、容器化和微服务架构,支持Docker和Kubernetes;2)引入JIT编译器和枚举类型,提升性能和数据处理效率;3)持续优化性能和推广最佳实践。

在PHP中,trait适用于需要方法复用但不适合使用继承的情况。1)trait允许在类中复用方法,避免多重继承复杂性。2)使用trait时需注意方法冲突,可通过insteadof和as关键字解决。3)应避免过度使用trait,保持其单一职责,以优化性能和提高代码可维护性。

依赖注入容器(DIC)是一种管理和提供对象依赖关系的工具,用于PHP项目中。DIC的主要好处包括:1.解耦,使组件独立,代码易维护和测试;2.灵活性,易替换或修改依赖关系;3.可测试性,方便注入mock对象进行单元测试。

SplFixedArray在PHP中是一种固定大小的数组,适用于需要高性能和低内存使用量的场景。1)它在创建时需指定大小,避免动态调整带来的开销。2)基于C语言数组,直接操作内存,访问速度快。3)适合大规模数据处理和内存敏感环境,但需谨慎使用,因其大小固定。

PHP通过$\_FILES变量处理文件上传,确保安全性的方法包括:1.检查上传错误,2.验证文件类型和大小,3.防止文件覆盖,4.移动文件到永久存储位置。

JavaScript中处理空值可以使用NullCoalescingOperator(??)和NullCoalescingAssignmentOperator(??=)。1.??返回第一个非null或非undefined的操作数。2.??=将变量赋值为右操作数的值,但前提是该变量为null或undefined。这些操作符简化了代码逻辑,提高了可读性和性能。


热AI工具

Undresser.AI Undress
人工智能驱动的应用程序,用于创建逼真的裸体照片

AI Clothes Remover
用于从照片中去除衣服的在线人工智能工具。

Undress AI Tool
免费脱衣服图片

Clothoff.io
AI脱衣机

AI Hentai Generator
免费生成ai无尽的。

热门文章

热工具

MinGW - 适用于 Windows 的极简 GNU
这个项目正在迁移到osdn.net/projects/mingw的过程中,你可以继续在那里关注我们。MinGW:GNU编译器集合(GCC)的本地Windows移植版本,可自由分发的导入库和用于构建本地Windows应用程序的头文件;包括对MSVC运行时的扩展,以支持C99功能。MinGW的所有软件都可以在64位Windows平台上运行。

PhpStorm Mac 版本
最新(2018.2.1 )专业的PHP集成开发工具

SublimeText3汉化版
中文版,非常好用

SublimeText3 英文版
推荐:为Win版本,支持代码提示!

禅工作室 13.0.1
功能强大的PHP集成开发环境