PHP函数Preg匹配拉第二个图像而不是第一个

时间:2012-12-21 17:08:15

标签: php arrays preg-match

我的php代码中的函数:

private function get_first_images($html){
    preg_match_all('/<img.+src=[\'"]([^\'"]+)[\'"].*>/i', $html, $matches);
    if(isset($matches[1]) && isset($matches[1][0]) && !empty($matches[1][0])){
        return $matches[1][0];
    }else{
        return false;
    }
}

正在拉第二张图片而不是第一张图片。以下是它正在查看的xml的示例:

<![CDATA[
<a href="http://mls-photos.diversesolutions.com/355/1246202/0-full.jpg?15054836" target="_blank"><img src="http://mls-photos.diversesolutions.com/355/1246202/0-medium.jpg?15054836" alt="Property Photo" /></a><br /><br /><img src="http://cdn1.diverse-cdn.com/idx-v2/mls-icons/rein.png" alt="Mls Icon" /><br /><br /><b>3 beds, 2 full, 1 part baths</b><br />Home size: 1,700 sq ft<br />Lot Size: 0 sq ft<br />Property Type: Residential, Residential / Detached<br />MLS Number: 1246202<br />Community: North Norfolk<br />Tract: East Beach<br /><br /><br />Beautiful New Home With Wrap Around Porch, 10 Ft. Ceilings On First Floor, Hardwood Floors, Custom Cabinets, Granite, One Block To The Beach. Real Cedar Shake Exterior. Corner Lot. Carriage House Unfinished. <br /><br />Listed with Keller Williams Realty<br /><hr noshade="noshade" /><br /><b>Brought to you by Virginia Beach Real Estate Team, Keller Williams Realty. Call me today at 757-215-4246, or visit my website at <a href="http://www.vbret.com" target="_blank">www.vbret.com</a>!</b><br /><br /><p>Users of this Site are granted a limited, nonexclusive license to use the Site and its listing content for personal and noncommercial use only.
 </p>
 <p>
 Real Estate Information Network, Inc. (REIN) updates its listings on a daily basis. Data last updated: 12/21/12 7:55 AM PST. Some properties which appear for sale on this website may have subsequently sold or may no longer be available.
 </p>
 <p>
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 <p>
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 </p><hr noshade="noshade" />
]]>

如何修复它以便拉出第一张图像而不是第二张图片?

1 个答案:

答案 0 :(得分:2)

你需要制作+ ungreedy:

private function get_first_images($html){
    preg_match_all('/<img.+?src=[\'"]([^\'"]+)[\'"].*>/i', $html, $matches);
    if(isset($matches[1]) && isset($matches[1][0]) && !empty($matches[1][0])){
        return $matches[1][0];
    }else{
        return false;
    }
}