php var_dump();结果php字符串(4)";1“;
当我使用php var_dump($result)时;它是给我字符串(4)“1”; 我很困惑;为什么字符串长度可以是4,看起来就像字符串“1”; 然后在函数中调试结果php var_dump();结果php字符串(4)";1“;,php,string,var-dump,Php,String,Var Dump,当我使用php var_dump($result)时;它是给我字符串(4)“1”; 我很困惑;为什么字符串长度可以是4,看起来就像字符串“1”; 然后在函数中调试结果 var_dump(ord($return).'|'.ord('1').'|'); var_dump(chr(ord($return))); var_dump($return);exit; 输出是 字符串(7)“239 | 49 |” 字符串(1)“ï” 字符串(4)“ï»1” 那么
var_dump(ord($return).'|'.ord('1').'|');
var_dump(chr(ord($return)));
var_dump($return);exit;
输出是
字符串(7)“239 | 49 |”
字符串(1)“ï”
字符串(4)“ï»1”
那么我猜结果有一些看不见的特征;
如何解析结果使$return==1
?清理看不见的煤块
有人能帮我吗
更新:
当我进行json_编码时($return);它的输出为“\ufeff1”
我使用的是php5.4linuxub136 3.2.0-52-generic#78 Ubuntu
这是我的功能
function dfopen($url, $limit = 0, $post = '', $cookie = '', $bysocket = FALSE , $ip = '', $timeout = 15, $block = TRUE, $encodetype = 'URLENCODE') {
//error_log("[uc_server]\r\nurl: $url\r\npost: $post\r\n\r\n", 3, 'c:/log/php_fopen.txt');
$return = '';
$matches = parse_url($url);
$host = $matches['host'];
$path = $matches['path'] ? $matches['path'].($matches['query'] ? '?'.$matches['query'] : '') : '/';
$port = !empty($matches['port']) ? $matches['port'] : 80;
if($post) {
$out = "POST $path HTTP/1.0\r\n";
$out .= "Accept: */*\r\n";
//$out .= "Referer: $boardurl\r\n";
$out .= "Accept-Language: zh-cn\r\n";
$boundary = $encodetype == 'URLENCODE' ? '' : ';'.substr($post, 0, trim(strpos($post, "\n")));
$out .= $encodetype == 'URLENCODE' ? "Content-Type: application/x-www-form-urlencoded\r\n" : "Content-Type: multipart/form-data$boundary\r\n";
$out .= "User-Agent: $_SERVER[HTTP_USER_AGENT]\r\n";
$out .= "Host: $host:$port\r\n";
$out .= 'Content-Length: '.strlen($post)."\r\n";
$out .= "Connection: Close\r\n";
$out .= "Cache-Control: no-cache\r\n";
$out .= "Cookie: $cookie\r\n\r\n";
$out .= $post;
} else {
$out = "GET $path HTTP/1.0\r\n";
$out .= "Accept: */*\r\n";
//$out .= "Referer: $boardurl\r\n";
$out .= "Accept-Language: zh-cn\r\n";
$out .= "User-Agent: $_SERVER[HTTP_USER_AGENT]\r\n";
$out .= "Host: $host:$port\r\n";
$out .= "Connection: Close\r\n";
$out .= "Cookie: $cookie\r\n\r\n";
}
if(function_exists('fsockopen')) {
$fp = @fsockopen(($ip ? $ip : $host), $port, $errno, $errstr, $timeout);
} elseif (function_exists('pfsockopen')) {
$fp = @pfsockopen(($ip ? $ip : $host), $port, $errno, $errstr, $timeout);
} else {
$fp = false;
}
if(!$fp) {
return '';
} else {
stream_set_blocking($fp, $block);
stream_set_timeout($fp, $timeout);
@fwrite($fp, $out);
$status = stream_get_meta_data($fp);
if(!$status['timed_out']) {
while (!feof($fp)) {
if(($header = @fgets($fp)) && ($header == "\r\n" || $header == "\n")) {
break;
}
}
$stop = false;
while(!feof($fp) && !$stop) {
$data = fread($fp, ($limit == 0 || $limit > 8192 ? 8192 : $limit));
$return .= $data;
if($limit) {
$limit -= strlen($data);
$stop = $limit <= 0;
}
}
}
@fclose($fp);
return $return;
}
}
函数dfopen($url,$limit=0,$post=''',$cookie=',$bysocket=FALSE,$ip=',$timeout=15,$block=TRUE,$encodetype='URLENCODE'){
//错误日志(“[uc\U服务器]\r\nurl:$url\r\npost:$post\r\n\r\n”,3,'c:/log/php\u fopen.txt');
$return='';
$matches=parse_url($url);
$host=$matches['host'];
$path=$matches['path']?$matches['path']。($matches['query']?'?'。$matches['query']:'')/;
$port=!empty($matches['port'])?$matches['port']:80;
如果有的话(员额){
$out=“POST$path HTTP/1.0\r\n”;
$out.=“接受:*/\r\n”;
//$out.=“Referer:$boardurl\r\n”;
$out.=“接受语言:zh cn\r\n”;
$boundary=$encodetype=='URLENCODE'?'':';'.substr($post,0,trim(strpos($post,“\n”)));
$out.=$encodetype=='URLENCODE'?“内容类型:应用程序/x-www-form-urlencoded\r\n”:“内容类型:多部分/表单数据$boundary\r\n”;
$out.=“用户代理:$\u服务器[HTTP\u用户\u代理]\r\n”;
$out.=“主机:$Host:$port\r\n”;
$out.=“内容长度:”.strlen($post)。“\r\n”;
$out.=“连接:关闭\r\n”;
$out.=“缓存控制:无缓存\r\n”;
$out.=“Cookie:$Cookie\r\n\r\n”;
$out.=$post;
}否则{
$out=“获取$path HTTP/1.0\r\n”;
$out.=“接受:*/\r\n”;
//$out.=“Referer:$boardurl\r\n”;
$out.=“接受语言:zh cn\r\n”;
$out.=“用户代理:$\u服务器[HTTP\u用户\u代理]\r\n”;
$out.=“主机:$Host:$port\r\n”;
$out.=“连接:关闭\r\n”;
$out.=“Cookie:$Cookie\r\n\r\n”;
}
如果(函数_存在('fsockopen')){
$fp=@fsockopen($ip?$ip:$host),$port、$errno、$errstr、$timeout);
}elseif(函数_存在('pfsockopen')){
$fp=@pfsockopen($ip?$ip:$host),$port,$errno,$errstr,$timeout);
}否则{
$fp=假;
}
如果(!$fp){
返回“”;
}否则{
流组阻塞($fp,$block);
流设置超时($fp,$timeout);
@fwrite($fp,$out);
$status=stream\u get\u meta\u数据($fp);
如果(!$status['timed_out'])){
而(!feof($fp)){
如果(($header=@fgets($fp))&($header==“\r\n”| |$header==“\n”)){
打破
}
}
$stop=false;
而(!feof($fp)和(!$stop){
$data=fread($fp,($limit==0 | |$limit>8192?8192:$limit));
$return.=$data;
如果($限额){
$limit-=strlen($data);
$stop=$limitstring(4)“ï»1”
:这些字符串中显然包含多字节字符。