PHP采集程序中常用的函数
函数描述及例子 PHP采集程序中常用的函数 查询关键字 PHP采集程序中常用的函数
//获得当前的脚本网址 function get_php_url(){ if (! empty empty ( $_SERVER [ "REQUEST_URI" ])){ $scriptName = $_SERVER [ "REQUEST_URI" ]; $nowurl = $scriptName ; } else { $scriptName = $_SERVER [ "PHP_SELF" ]; if ( empty empty ( $_SERVER [ "QUERY_STRING" ])) $nowurl = $scriptName ; else $nowurl = $scriptName . "?" . $_SERVER [ "QUERY_STRING" ]; } return $nowurl ; } //把全角数字转为半角数字 function GetAlabNum( $fnum ){ $nums = array ( "０" , "１" , "２" , "３" , "４" , "５" , "６" , "７" , "８" , "９" ); $fnums = "0123456789" ; for ( $i =0; $i <=9; $i ++) $fnum = str_replace ( $nums [ $i ], $fnums [ $i ], $fnum ); $fnum = ereg_replace ( "[^0-9\.]|^0{1,}" , "" , $fnum ); if ( $fnum == "" ) $fnum =0; return $fnum ; } //去除HTML标记 function Text2Html( $txt ){ $txt = str_replace ( " " , " " , $txt ); $txt = str_replace ( "<" , "<" , $txt ); $txt = str_replace ( ">" , ">" , $txt ); $txt = preg_replace( "/[\r\n]{1,}/isU" ," \r\n", $txt ); return $txt ; } //清除HTML标记 function ClearHtml( $str ){ $str = str_replace ( '<' , '<' , $str ); $str = str_replace ( '>' , '>' , $str ); return $str ; } //相对路径转化成绝对路径 function relative_to_absolute( $content , $feed_url ) { preg_match( '/(http|https|ftp):\/\//' , $feed_url , $protocol ); $server_url = preg_replace( "/(http|https|ftp|news):\/\//" , "" , $feed_url ); $server_url = preg_replace( "/\/.*/" , "" , $server_url ); if ( $server_url == '' ) { return $content ; } if (isset( $protocol [0])) { $new_content = preg_replace( '/href="\//' , 'href="' . $protocol [0]. $server_url . '/' , $content ); $new_content = preg_replace( '/src="\//' , 'src="' . $protocol [0]. $server_url . '/' , $new_content ); } else { $new_content = $content ; } return $new_content ; } //取得所有链接 function get_all_url( $code ){ preg_match_all( '/<a\s+href=["|\']?([^>"\' ]+)["|\']?\s*[^>]*>([^>]+)<\/a>/i' , $code , $arr ); return array ( 'name' => $arr [2], 'url' => $arr [1]); } //获取指定标记中的内容 function get_tag_data( $str , $start , $end ){ if ( $start == '' || $end == '' ){ return ; } $str = explode ( $start , $str ); $str = explode ( $end , $str [1]); return $str [0]; } //HTML表格的每行转为CSV格式数组 function get_tr_array( $table ) { $table = preg_replace( "'<td[^>]*?>'si" , '"' , $table ); $table = str_replace ( "" , '",' , $table ); $table = str_replace ( "" , "{tr}" , $table ); //去掉 HTML 标记 $table = preg_replace( "'<[\/\!]*?[^<>]*?>'si" , "" , $table ); //去掉空白字符 $table = preg_replace( "'([\r\n])[\s]+'" , "" , $table ); $table = str_replace ( " " , "" , $table ); $table = str_replace ( " " , "" , $table ); $table = explode ( ",{tr}" , $table ); array_pop ( $table ); return $table ; } //将HTML表格的每行每列转为数组，采集表格数据 function get_td_array( $table ) { $table = preg_replace( "'<table[^>]*?>'si" , "" , $table ); $table = preg_replace( "'<tr[^>]*?>'si" , "" , $table ); $table = preg_replace( "'<td[^>]*?>'si" , "" , $table ); $table = str_replace ( "" , "{tr}" , $table ); $table = str_replace ( "" , "{td}" , $table ); //去掉 HTML 标记 $table = preg_replace( "'<[\/\!]*?[^<>]*?>'si" , "" , $table ); //去掉空白字符 $table = preg_replace( "'([\r\n])[\s]+'" , "" , $table ); $table = str_replace ( " " , "" , $table ); $table = str_replace ( " " , "" , $table ); $table = explode ( '{tr}' , $table ); array_pop ( $table ); foreach ( $table as $key => $tr ) { $td = explode ( '{td}' , $tr ); array_pop ( $td ); $td_array [] = $td ; } return $td_array ; } //返回字符串中的所有单词 $distinct=true 去除重复 function split_en_str( $str , $distinct =true) { preg_match_all( '/([a-zA-Z]+)/' , $str , $match ); if ( $distinct == true) { $match [1] = array_unique ( $match [1]); } sort( $match [1]); return $match [1]; } 函数描述及例子 PHP采集程序中常用的函数 查询关键字 PHP采集程序中常用的函数 <!--? //获得当前的脚本网址 function get_php_url(){ if (! empty empty ( $_SERVER [ "REQUEST_URI" ])){ $scriptName = $_SERVER [ "REQUEST_URI" ]; $nowurl = $scriptName ; } else { $scriptName = $_SERVER [ "PHP_SELF" ]; if ( empty empty ( $_SERVER [ "QUERY_STRING" ])) $nowurl = $scriptName ; else $nowurl = $scriptName . "?" . $_SERVER [ "QUERY_STRING" ]; } return $nowurl ; } //把全角数字转为半角数字 function GetAlabNum( $fnum ){ $nums = array ( "０" , "１" , "２" , "３" , "４" , "５" , "６" , "７" , "８" , "９" ); $fnums = "0123456789" ; for ( $i =0; $i <=9; $i ++) $fnum = str_replace ( $nums [ $i ], $fnums [ $i ], $fnum ); $fnum = ereg_replace ( "[^0-9\.]|^0{1,}" , "" , $fnum ); if ( $fnum == "" ) $fnum =0; return $fnum ; } //去除HTML标记 function Text2Html( $txt ){ $txt = str_replace ( " " , " " , $txt ); $txt = str_replace ( "<" , "<" , $txt ); $txt = str_replace ( "-->" , ">" , $txt ); $txt = preg_replace( "/[\r\n]{1,}/isU" ," \r\n", $txt ); return $txt ; } //清除HTML标记 function ClearHtml( $str ){ $str = str_replace ( '<' , '<' , $str ); $str = str_replace ( '>' , '>' , $str ); return $str ; } //相对路径转化成绝对路径 function relative_to_absolute( $content , $feed_url ) { preg_match( '/(http|https|ftp):\/\//' , $feed_url , $protocol ); $server_url = preg_replace( "/(http|https|ftp|news):\/\//" , "" , $feed_url ); $server_url = preg_replace( "/\/.*/" , "" , $server_url ); if ( $server_url == '' ) { return $content ; } if (isset( $protocol [0])) { $new_content = preg_replace( '/href="\//' , 'href="' . $protocol [0]. $server_url . '/' , $content ); $new_content = preg_replace( '/src="\//' , 'src="' . $protocol [0]. $server_url . '/' , $new_content ); } else { $new_content = $content ; } return $new_content ; } //取得所有链接 function get_all_url( $code ){ preg_match_all( '/<a\s+href=["|\']?([^>"\' ]+)["|\']?\s*[^>]*>([^>]+)<\/a>/i' , $code , $arr ); return array ( 'name' => $arr [2], 'url' => $arr [1]); } //获取指定标记中的内容 function get_tag_data( $str , $start , $end ){ if ( $start == '' || $end == '' ){ return ; } $str = explode ( $start , $str ); $str = explode ( $end , $str [1]); return $str [0]; } //HTML表格的每行转为CSV格式数组 function get_tr_array( $table ) { $table = preg_replace( "'<td[^>]*?>'si" , '"' , $table ); $table = str_replace ( "" , '",' , $table ); $table = str_replace ( "" , "{tr}" , $table ); //去掉 HTML 标记 $table = preg_replace( "'<[\/\!]*?[^<>]*?>'si" , "" , $table ); //去掉空白字符 $table = preg_replace( "'([\r\n])[\s]+'" , "" , $table ); $table = str_replace ( " " , "" , $table ); $table = str_replace ( " " , "" , $table ); $table = explode ( ",{tr}" , $table ); array_pop ( $table ); return $table ; } //将HTML表格的每行每列转为数组，采集表格数据 function get_td_array( $table ) { $table = preg_replace( "'<table[^>]*?>'si" , "" , $table ); $table = preg_replace( "'<tr[^>]*?>'si" , "" , $table ); $table = preg_replace( "'<td[^>]*?>'si" , "" , $table ); $table = str_replace ( "" , "{tr}" , $table ); $table = str_replace ( "" , "{td}" , $table ); //去掉 HTML 标记 $table = preg_replace( "'<[\/\!]*?[^<>]*?>'si" , "" , $table ); //去掉空白字符 $table = preg_replace( "'([\r\n])[\s]+'" , "" , $table ); $table = str_replace ( " " , "" , $table ); $table = str_replace ( " " , "" , $table ); $table = explode ( '{tr}' , $table ); array_pop ( $table ); foreach ( $table as $key => $tr ) { $td = explode ( '{td}' , $tr ); array_pop ( $td ); $td_array [] = $td ; } return $td_array ; } //返回字符串中的所有单词 $distinct=true 去除重复 function split_en_str( $str , $distinct =true) { preg_match_all( '/([a-zA-Z]+)/' , $str , $match ); if ( $distinct == true) { $match [1] = array_unique ( $match [1]); } sort( $match [1]); return $match [1]; } </td[^></tr[^></table[^></td[^></a\s+href=[ "|\']?([^></td[^></tr[^></table[^></td[^></a\s+href=[" |\']?([^>
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