包()在PHP中。非法的十六进制数字警告 [英] pack() in php. Illegal hex digit warning
问题描述
我在php中使用pack()时遇到一些问题
$ currencypair =EUR / USD;
$ buy_sell =buy;
$ alert_device_token = array(a,a,b);
$ message =您的。 $ currencypair。 。 $ buy_sell。 警戒价已经达到!;
$ payload ['aps'] = array(
'alert'=> $ message,
'badge'=> 1,
'sound'=>'默认'
);
$ payload = json_encode($ payload);
foreach($ alert_device_token as $ alert_device)
{
$ apnsMessage = chr(0)。 chr(0)。 chr(32)。
包('H *',str_replace('','',$ alert_device))。
chr(0)。 chr(strlen($ payload))。 $有效载荷;
echo $ apnsMessage;
}
现在有时我会看到下面的警告运行相同的代码 -
$ b:$ b
警告:pack()[function.pack]:类型H:非法的十六进制数字g in / code / FR2BVl
非法的十六进制数字不断变化。
现场检查 here
echo pack(H *,2133)
产生!3
,因为!
代码为0x21, 3
代码为0x33。由于 g
不是十六进制数字,因此会给出警告。要对包的 H
格式有用,参数必须是十六进制数。如果 $ alert_device
不是 - 你应该使用别的东西,这取决于它是什么以及你期望的结果。
i am having some problems using pack() in php
$currencypair = "EUR/USD";
$buy_sell = "buy";
$alert_device_token =array("a","a","b");
$message = "Your " . $currencypair . " " . $buy_sell . " alert price has been reached!";
$payload['aps'] = array (
'alert' => $message,
'badge' => 1,
'sound' => 'default'
);
$payload = json_encode($payload);
foreach ($alert_device_token as $alert_device)
{
$apnsMessage = chr(0) . chr(0) . chr(32) .
pack('H*', str_replace(' ', '', $alert_device)) .
chr(0) . chr(strlen($payload)) . $payload;
echo $apnsMessage;
}
Now sometimes i get following warnings running the same code -
Warning: pack() [function.pack]: Type H: illegal hex digit g in /code/FR2BVl
the illegal hex digit keeps varying though. Any ideas about this warning and ways to remove it.
check it live here
pack
converts hexadecimal number to binary, e.g.:
echo pack("H*", "2133")
produces !3
, since !
has code 0x21 and 3
has code 0x33. Since g
is not hex digit, warning is given. To be useful for pack's H
format, the argument must be hex number. If $alert_device
isn't - you should use something else, depending on what it is and what you expect as the result.
这篇关于包()在PHP中。非法的十六进制数字警告的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持IT屋!