{var%20f='http://v.t.sina.com.cn/share/share.php?appkey=1515056452',u=z||d.location,p=['&url=',e(u),'&title=',e(t||d.title),'&source=',e(r),'&sourceUrl=',e(l),'&content=',c||'gb2312','&pic=',e(p||'')].join('');function%20a(){if(!window.open([f,p].join(''),'mb',['toolbar=0,status=0,resizable=1,width=440,height=430,left=',(s.width-440)/2,',top=',(s.height-430)/2].join('')))u.href=[f,p].join('');};if(/Firefox/.test(navigator.userAgent))setTimeout(a,0);else%20a();})(screen,document,encodeURIComponent,'','','https://www.manongdao.com/data/attach/logo/logo.png', '推荐 在下西门庆 的问题《curl returns 400 bad request without quotes》','https://www.manongdao.com/q-938617.html','页面编码gb2312|utf-8默认gb2312'));){kind=link}
curl -v 'something.com:12684/CAB/keyfile?r=ORE_0&t=VOD&p=1'
returns a 200, but using
curl -v something.com:12684/CAB/keyfile?r=ORE_0&t=VOD&p=1
returns a 400. Why do the quotes matters?
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Your URL has characters your shell recognizes as special. Most likely, the
&, which is the signal to UNIX-ish shells to place the command in the background. So you effectively are executing three commands:You're not seeing any shell error output, because the last two are valid shell constructs.
Always quote your arguments. If in PHP, use
escapeshellarg. Better, use thecurlbuilt-in or a third-party library like Guzzle.