PHP Cron Job json_encode错误

Question

我有一个运行货币转换的简单检查的PHP文件。当我通过浏览器运行它时，它完美地工作，但我的目标是构建一个cron。当我通过SSH运行脚本：

php /path/to/file.php 

我得到如下：

PHP Warning: json_encode(): Invalid UTF-8 sequence in argument in /path/to/file.php on line 36 

其中第36行是：

fwrite($fh, json_encode($conversions)); 

...其中$转换是一个简单的单二维阵列

这里是档案：

$conversions = array(); 

$currencies = json_decode(file_get_contents("/path/to/currencies.json"), true); 

foreach($currencies as $cur=>$data){ 


    //make string to be put in API 
    $string = "1USD=?".$data['code']; 
    //Call Google API 
    $google_url = "http://www.google.com/ig/calculator?hl=en&q=".$string; 

    $ch = curl_init(); 
    // set URL and other appropriate options 
    curl_setopt($ch, CURLOPT_URL, $google_url); 
    curl_setopt($ch, CURLOPT_HEADER, 0); 
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);  
    // grab URL and pass it to the browser  
    $result = curl_exec($ch); 
    //Explode result to convert into an array 
    $result = explode('"', $result); 

    $converted_amount = explode(' ', $result[3]); 
    $conversion = $converted_amount[0]; 
    //$conversion = $conversion * $amount; 
    $conversions[$cur] = $conversion; 
    if($conversion==0){ exit('0 Return Error'); } 

    curl_close($ch); 

} 

$fh = fopen("/path/to/currency_conversions.json", 'w') or die("can't open file"); 
fwrite($fh, json_encode($conversions)); 
fclose($fh); 

Answer 1

好吧，我找你，我发现json_encode acceptes只有UTF-8 所以这里是解决方案：

for($i=0;$i<count($conversions);$i++) 
    $conversions[$i] = utf8_encode($conversions[$i]); 
fwrite($fh, json_encode($conversions)); 

Answer 2

尝试将PHP版本更新到版本5.2.7以后的版本 旧版本有UTF-8错误。