在PHP中提取字符串中第一個(gè)數(shù)字？

測(cè)試過(guò)，符合要求

$str="登山服：5620A登山服";

$search1 = implode("-",range("a","z"));

$search2 = implode("-",range("A","Z"));

$search3 = implode("-",range(0,9));

$search4 = implode("-",array("："));

$search = $search1."-" .$search2."-" .$search3."-" .$search4;

$oldarr = explode("-",$search);

$newarr = array();

foreach($oldarr as $value)

$newarr [] = "{mysplit}";

$str = str_replace($oldarr, $newarr, $str);

$arr = explode("{mysplit}",$str);

echo $arr[0];