php strstr查找字符串中是否包含某些字符的查找函数

  1; } /** * 用了一下正则，这种方法十分不建议，尤其是 $needle 中包含 * 特殊字符，如 ^,$,/ 等等 * @param unknown_type $haystack * @param unknown_type $needle */ function isInString3($haystack, $needle) { $pattern = '/' . $needle . '/'; return (bool)preg_match($pattern, $haystack); } /** * 利用一下 strpos() 函数 * @param unknown_type $haystack * @param unknown_type $needle */ function isInString4($haystack, $needle) { return false !== strpos($haystack, $needle); } //测试 $haystack = 'I am ITBDW'; $needle = 'IT'; var_dump(isInString1($haystack, $needle)); 

 $city_str=fopen(cgi_path."/data/weather/city.dat","r"); $city_ch=fread($city_str,filesize(cgi_path."/data/weather/city.dat")); $city_ch_arr=explode("|",$city_ch); //如果能匹配到所在市 if(strstr($area_ga,"市")){ foreach($city_ch_arr as $city_ch_arr_item){ if(@strstr($area_ga,$city_ch_arr_item)){ echo $area_ga.'
'; echo $city_ch_arr_item; $s_city=$city_ch_arr_item; } } } //如果找不到市 那么看看是不是能找到省 有时会有这样的情况：广东省长城宽带 这样的一律归属到该省省府 elseif(strstr($area_ga,"河北")!==false){ $s_city="石家庄"; }elseif(strstr($area_ga,"福建")!==false){ $s_city="福州"; }elseif(strstr($area_ga,"台湾")!==false){ $s_city="台北"; }elseif(strstr($area_ga,"香港")!==false){ $s_city="香港"; }elseif(strstr($area_ga,"广西")!==false){ $s_city="南宁"; }elseif(strstr($area_ga,"浙江")!==false){ $s_city="杭州"; }elseif(strstr($area_ga,"江苏")!==false){ $s_city="南京"; }elseif(strstr($area_ga,"山东")!==false){ $s_city="济南"; }elseif(strstr($area_ga,"安徽")!==false){ $s_city="合肥"; }elseif(strstr($area_ga,"湖南")!==false){ $s_city="长沙"; }elseif(strstr($area_ga,"四川")!==false){ $s_city="成都"; }elseif(strstr($area_ga,"云南")!==false){ $s_city="昆明"; }elseif(strstr($area_ga,"广东")!==false){ $s_city="广州"; }elseif(strstr($area_ga,"贵州")!==false){ $s_city="贵阳"; }elseif(strstr($area_ga,"西藏")!==false){ $s_city="拉萨"; }elseif(strstr($area_ga,"新疆")!==false){ $s_city="乌鲁木齐"; }elseif(strstr($area_ga,"蒙古")!==false){ $s_city="呼和浩特"; }elseif(strstr($area_ga,"黑龙江")!==false){ $s_city="哈尔滨"; }elseif(strstr($area_ga,"辽宁")!==false){ $s_city="沈阳"; }elseif(strstr($area_ga,"吉林")!==false){ $s_city="长春"; }elseif(strstr($area_ga,"河南")!==false){ $s_city="郑州"; }elseif(strstr($area_ga,"湖北")!==false){ $s_city="武汉"; }elseif(strstr($area_ga,"山西")!==false){ $s_city="太原"; }elseif(strstr($area_ga,"陕西")!==false){ $s_city="西安"; }elseif(strstr($area_ga,"甘肃")!==false){ $s_city="兰州"; }elseif(strstr($area_ga,"宁夏")!==false){ $s_city="银川"; }elseif(strstr($area_ga,"海南")!==false){ $s_city="海口"; }elseif(strstr($area_ga,"江西")!==false){ $s_city="南昌"; }elseif(strstr($area_ga,"澳门")!==false){ $s_city="澳门"; } //如果都不存在 就是默认显示广州 比如本地机 else{ $s_city="广州"; }

 \n"; //输出boxcccccccccbcccccccccccccc // 完整匹配中间的box 不因前而的b而停止 echo strstr('aaaaaaAbaaa aaaa aaaaaaaaaboxccccccccccccboxccccccccccc','box')."
\n"; //输出boxccccccccccccboxccccccccccc // 有两个关键字时, 遇到第一个停止. echo strstr('Subscrtibe our to free newsletter about New Freew to','to')."
\n"; //输出to free newsletter about New Freew to ?>