<?php
$str="abcd/efg/qw123/qwfet/";
$needle="w12";
$m=preg_match("'(.*/)([^/]*$needle.*)/'U",$str,$arr);
if($m){
echo $arr["1"];
echo"<br \>";
echo $arr["2"];
}
?>
$str="abcd/efg/qw123/qwfet/";
$needle="w12";
$m=preg_match("'(.*/)([^/]*$needle.*)/'U",$str,$arr);
if($m){
echo $arr["1"];
echo"<br \>";
echo $arr["2"];
}
?>
$string = "abcd/efg/qw123/qwfet/";
$splitStrArray = explode("w12",$string);
if(cout($splitStrArray) > 0)
{
echo "字符串中含有w12";
echo "之前".$splitStrArray[0];
echo "之后".$splitStrArray[1];//如果不只一个w12的话,用一个while循环
}
else echo "字符串中没有含有w12";
$str = "efg/abcd/efg/qw123/qwfet/";
$keyword = "w12";
preg_match_all("'(.*/)([^/]*$keyword.*)/'U", $str, $ar);
print_r($ar);
?>