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# 示例技巧

## 示例技巧

## 技巧1:求数组中最大数的下标

```php
$maxValue = max($arr);
echo array_search($maxValue, $arr);
```

结果:

```
3
```

[array\_search()](http://www.w3school.com.cn/php/func_array_search.asp) - 搜索数组中给定的值并返回键名。