try .. catch with system()命令php on laravel 5.0 [英] try .. catch with system() command php on laravel 5.0
问题描述
使用Illuminate\Support\Facades\Log;
...
try {
system('。dump master | sqlite3'。$ older。'>'。storage_path()。'/ tmp /'。$ tabla。 sql');
} catch(\Exception $ e){
Log :: alert('问题导入旧表'$ tabla。$ e-> GetMessage());
}
我在shell上看到我的错误,但不能在我自己的laravel日志上写。 (Log:alert)
您必须通过 STDERR
并且可能是 STDOUT
。使用 proc_open ,例如:
$ desc = [
1 => ['pipe','w'],// STDOUT
2 => ['pipe','w'],// STDERR
];
$ proc = proc_open('ls -l。something',$ desc,$ pipes);
if(is_resource($ proc)){
if($ out = stream_get_contents($ pipes [1])){
echo $ out;
}
fclose($ pipes [1]);
if($ err = stream_get_contents($ pipes [2])){
fprintf(STDERR,Error:%s\\\
,$ err);
}
fclose($ pipes [2]);
//您还可以检查进程退出状态
// 0表示成功,否则为错误。
$ exit_status = proc_close($ proc);
}
当然,在 STDOUT
pipe,如果命令重定向到一个文件。
是的, system()
不会抛出异常。显然,您可以实现自己的类,如果进程退出状态不为零,或者 STDERR
pipe中存在某些东西,则会抛出异常:
class MyShellException extends \Exception {}
class MyShell {
public static function execute($ command,& $ out = null){
if(func_num_args()> 1){
$ desc [1] = ['pipe','w' ]。
} else {
$ desc [1] = ['file','/ dev / null'];
}
$ desc [2] = ['pipe','w'];
$ proc = proc_open($ command,$ desc,$ pipes);
if(is_resource($ proc)){
if(isset($ pipes [1])){
$ out = stream_get_contents($ pipes [1]);
fclose($ pipes [1]);
}
if($ err = stream_get_contents($ pipes [2])){
fclose($ pipes [2]);
throw new MyShellException(Command $ command failed:$ err);
}
if($ exit_status = proc_close($ proc)){
throw new MyShellException(Command $ command exited with non-zero status);
}
}
}
}
try {
MyShell :: execute('ls -l。something' ,$ out);
echoOutput:$ out\\\
;
} catch(MyShellException $ e){
if(!empty($ out)){
echoOutput:$ out\\\
;
}
fprintf(STDERR,MyShell error:。$ e-> getMessage());
exit(1);
}
I've a code for command app made on laravel 5.0 with try .. catch and use system command. When there a exception, my catch not work.
use Illuminate\Support\Facades\Log;
...
try {
system('.dump master | sqlite3 ' . $older . ' > ' . storage_path() . '/tmp/' . $tabla . '.sql' );
} catch ( \Exception $e) {
Log::alert('Problem import old table '. $tabla . $e->GetMessage());
}
I see my error on shell but not write on my own laravel log. (Log:alert)
You have to gain access over STDERR
and, probably, STDOUT
. Use proc_open, e.g.:
$desc = [
1 => ['pipe', 'w'], // STDOUT
2 => ['pipe', 'w'], // STDERR
];
$proc = proc_open('ls -l . something', $desc, $pipes);
if (is_resource($proc)) {
if ($out = stream_get_contents($pipes[1])) {
echo $out;
}
fclose($pipes[1]);
if ($err = stream_get_contents($pipes[2])) {
fprintf(STDERR, "Error: %s\n", $err);
}
fclose($pipes[2]);
// You can also check the process exit status
// 0 means success, otherwise error.
$exit_status = proc_close($proc);
}
Of course, there is no need in STDOUT
pipe, if the command redirects it to a file.
And yes, system()
won't throw exceptions. Obviously, you can implement your own class which will throw an exception in case if the process exit status is non-zero, or there is something caught in the STDERR
pipe:
class MyShellException extends \Exception {}
class MyShell {
public static function execute($command, &$out = null) {
if (func_num_args() > 1) {
$desc[1] = ['pipe', 'w'];
} else {
$desc[1] = ['file', '/dev/null'];
}
$desc[2] = ['pipe', 'w'];
$proc = proc_open($command, $desc, $pipes);
if (is_resource($proc)) {
if (isset($pipes[1])) {
$out = stream_get_contents($pipes[1]);
fclose($pipes[1]);
}
if ($err = stream_get_contents($pipes[2])) {
fclose($pipes[2]);
throw new MyShellException("Command $command failed: $err");
}
if ($exit_status = proc_close($proc)) {
throw new MyShellException("Command $command exited with non-zero status");
}
}
}
}
try {
MyShell::execute('ls -l . something', $out);
echo "Output: $out\n";
} catch (MyShellException $e) {
if (!empty($out)) {
echo "Output: $out\n";
}
fprintf(STDERR, "MyShell error: " . $e->getMessage());
exit(1);
}
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