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这篇文章主要介绍了php检测url是否存在的方法,涉及php中get_headers及正则匹配的技巧,非常具有实用价值,需要的朋友可以参考下
本文实例讲述了php检测url是否存在的方法。分享给大家供大家参考。具体如下:
代码如下:
function url_exists($url) { $hdrs = @get_headers($url); return is_array($hdrs) ? preg_match('/^HTTP\\/\\d+\\.\\d+\\s+2\\d\\d\\s+.*$/',$hdrs[0]) : false; }
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