PHP把数组写入文件实例代码
在php中数组写入文件的方法有很多种,像我们要做成缓存文件就会把php数组转换成文件然后保存到.php文件,调用时直接调用此文件即可。
php把数组写入文件,通过序列和反序列实现。请看代码
$file="./data/file.cache";
file_put_contents($file,serialize($array));//写入缓存
代码如下 | 复制代码 |
$file="./data/file.cache"; |
//将一个测试的数组写入一个PHP文件:
代码如下 | 复制代码 |
$write_array = array( '1' => 'oneone', '2' => 'two', '3' => 'three', '4' => 'four', '5' => 'five' ); //字符串处理 |
这里用到了两个函数:
代码如下 | 复制代码 |
1,var_export(): |
·var_export — 用来输出或返回一个变量的字符串表示,它和 var_dump() 的区别是,var_export() 可以用来返回关于传递给该函数的变量的结构信息,并且其返回的表示是合法的 PHP 代码如果 “echo $string_process;”,则可以看到输出结果:
代码如下 | 复制代码 |
array ( 1 => 'oneone', 2 => 'two', 3 => 'three', 4 => 'four', 5 => 'five', ) |
而它就是我们要写入 test_array.php 文件的内容(除去 php 标签);
·var_dump() 函数用来打印变量的相关信息,它只用来“打印”,而不会返回值,它的原型是 void var_dump(……),我们来 “var_dump($string_process);”,则可以看到输出结果:
代码如下 | 复制代码 |
string(86) "array ( 1 => 'oneone', 2 => 'two', 3 => 'three', 4 => 'four', 5 => 'five', )" |
可以看到输出的string(86) “…”,再一次说明了 var_export() 返回的是一个字符串。

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