python的php exec脚本返回空字符串

Question

我正在通过接收空结果的exec命令从php执行python脚本。如果我从 shell 执行 python 命令，它会正确返回正确的结果，并且日志是静默的;这是我的PHP函数：

public function poll($palina){
    //set_include_path("/var/www/html/iPhone/inarrivo/python");
    $pythonCommand="python3.4 ../../python/palina.py $palina";
    $result=exec($pythonCommand);
    echo "<blank>command=$pythonCommand result=$result</blank>";
    $resultData = json_decode($result, true);
    if (!is_array($resultData)) {
        error_log($resultData);
        $resultData=Array();
    }
    //print_r($resultData);
    return $resultData;
}

这就是所谓的 Python 脚本：

#!/usr/local/bin/python3.4
# change above line to point to local 
# python executable
from xmlrpc.client import Server
from pprint import pprint
import sys, json
import datetime, time
palina=sys.argv[1]
DEV_KEY = 'UuC378Q3l3Y4vtF8q2Hj3i5Up6OmZKb2'
s1 = Server('http://muovi.roma.it/ws/xml/autenticazione/1')
s2 = Server('http://muovi.roma.it/ws/xml/paline/7')
token = s1.autenticazione.Accedi(DEV_KEY, '')
res = s2.paline.Previsioni(token, palina, 'it')
#pprint(res)
arrivi=res.get('risposta').get('primi_per_palina')[0].get('arrivi')
myList=[]
for arrivo in arrivi:
    if 'nessun_autobus' not in arrivo and 'non_monitorata' not in arrivo:
        output={}
        acapolinea=arrivo.get('a_capolinea')
        output["busDestination"]=arrivo.get('destinazione')
        output["wait"]=arrivo.get('annuncio')
        if output["wait"]=='In Arrivo':
            output["receiving"]=1
        else:
            output["receiving"]=0
        meb=arrivo.get('meb')
        output["busNumber"]=arrivo.get('linea')
        output["busLines"]=arrivo.get('id_percorso')
        output["time"]=arrivo.get('tempo_attesa')
        output["stops"]=int(arrivo.get('distanza_fermate'))
        output["palina"]=arrivo.get('id_palina')
        output["inarrivo"]=arrivo.get('in_arrivo')
        partenza= arrivo.get('prossima_partenza')
        if acapolinea == 1:
            output["receiving"]=2
            output["acapolinea"]=acapolinea
            if partenza:
                s = datetime.datetime.strptime(partenza.value, "%Y%m%dT%H:%M:%S")
                output["capolineaDate"]=s.strftime('%H:%M')
        myList.append(output)
print (json.dumps(myList));

此脚本在以前的服务器上工作正常。在 Centos 上是否有一些配置可以正确集成 php 和 python？

Answer 1

python脚本需要具有完整路径才能工作。