数组前加echo ‘

    1. ‘; 出来格式化效果
    2. test_yto.php 
    3. <?php
    5. $file = './write_str.xml';
    6. $con = file_get_contents($file);
    7. //XML标签配置
    8. $xmlTag = array(
    9.     'starttime',
    10.     'endtime',
    11.     'school'
    12. );
    14. $arr = array();
    15. foreach($xmlTag as $x) {
    16.     preg_match_all("/<".$x.">.*<\/".$x.">/", $con, $temp);
    17.     $arr[] = $temp[0];
    18. }
    19. //去除XML标签并组装数据
    20. $data = array();
    21. foreach($arr as $key => $value) {
    22.     foreach($value as $k => $v) {
    23.         $a = explode($xmlTag[$key].'>', $v);
    24.         $v = substr($a[1], 0, strlen($a[1])-2);
    25.         $data[$k][$xmlTag[$key]] = $v;
    26.     }
    27. }
    28. echo '<pre>';
    29. print_r($data);
    30.  
    31. write_str.xml
    32. <?xml version="1.0" encoding="utf8"?>
    33. <studentcareer>
    34.   <period>
    35.     <starttime>2000</starttime>
    36.     <endtime>2002</endtime>
    37.     <school>培新小学</school>
    38.   </period>
    39.   <period>
    40.     <starttime>2002</starttime>
    41.     <endtime>2006</endtime>
    42.     <school>览表东阳学校</school>
    43.   </period>
    44.   <period>
    45.     <starttime>2006</starttime>
    46.     <endtime>2009</endtime>
    47.     <school>惠来慈云实验中学</school>
    48.   </period>
    49.   <period>
    50.     <starttime>2009</starttime>
    51.     <endtime>2012</endtime>
    52.     <school>惠来一中</school>
    53.   </period>
    54.   <period>
    55.     <starttime>2012</starttime>
    56.     <endtime>2016</endtime>
    57.     <school>华南师范大学</school>
    58.   </period>
    59. </studentcareer>
    60.  
    61. 数组前加echo ''; 出来格式化效果 - 图1
    62. 不加 pre的效果：
    63. 数组前加echo ''; 出来格式化效果 - 图2