我有一个针对我提供的字符串索引的字符串。
我创建一个进程读它,我想知道如果有一个PHP函数,存在被我忽略或不知道能够更轻松地完成这一过程。
$数据:
Invoice No..... Sale Type Desc...... Misc Amt.... Misc Acc.. Misc Acc Desc.....................................
FOCF219611 CUSTOMER -0.02 8050 TOOLS & SUPPLIES - SERVICE
FOCF219669 CUSTOMER -14.49 8050 TOOLS & SUPPLIES - SERVICE
$ fieldIndexes:
Array (
[0] => 15
[1] => 20
[2] => 12
[3] => 10
[4] => 50
)
拆分$data
到$headers
数组:
array_push($headers, substr($data, 0, $fieldIndexes[0]));
array_push($headers, substr($data, $fieldIndexes[0], $fieldIndexes[1]));
array_push($headers, substr($data, $fieldIndexes[1], $fieldIndexes[2]));
array_push($headers, substr($data, $fieldIndexes[2], $fieldIndexes[3]));
array_push($headers, substr($data, $fieldIndexes[3], $fieldIndexes[4]));
有没有办法,可以去除部分字符串的函数 - 一个字符串像array_shift
?我想我可以循环的$fieldIndexes
,从字符串的开头提取第一长度,依此类推,直到该字符串是空的,凝结成3行这一点,并使其携带任何数量的fieldIndexes的?
期望的结果:
Array
(
[HEADERS] => Array
(
[0] => Invoice No
[1] => Sale Type Desc
[2] => Misc Amt
[3] => Misc Acc
[4] => Misc Acc Desc
)
[1] => Array
(
[Invoice No] => FOCF219611
[Sale Type Desc] => CUSTOMER
[Misc Amt] => -0.02
[Misc Acc] => 8050
[Misc Acc Desc] => TOOLS & SUPPLIES - SERVICE
)
)
你可以创建一个函数像这样的使用块大小来分割。注意:由于$fieldIndexes
阵列中的每个尺寸不包括列之间的空间,我添加一个到每个长度(15 + 1,20 + 1,...)
<?php
$headerString ="Invoice No..... Sale Type Desc...... Misc Amt.... Misc Acc.. Misc Acc Desc.....................................";
$fieldIndexes = [ 15+1, 20+1, 12+1, 10+1, 50+1];
function getParts($string, $positions){
$parts = array();
foreach ($positions as $position){
$parts[] = substr($string, 0, $position);
$string = substr($string, $position);
}
return $parts;
}
print_r(getParts($headerString, $fieldIndexes));
?>
结果:
Array
(
[0] => Invoice No.....
[1] => Sale Type Desc......
[2] => Misc Amt....
[3] => Misc Acc..
[4] => Misc Acc Desc.....................................
)
这样的(因为我说在评论)
$str = 'Invoice No..... Sale Type Desc...... Misc Amt.... Misc Acc.. Misc Acc Desc.....................................';
$f = fopen('php://temp', 'w+');
fwrite($f, $str);
rewind($f);
$headers = [];
$header = '';
while(false !== ($c = fgetc($f))){
if($c != '.'){
$header .= $c;
}elseif(!empty($header)){
$headers[] = trim($header);
$header = '';
}
}
print_r($headers);
输出
Array
(
[0] => Invoice No
[1] => Sale Type Desc
[2] => Misc Amt
[3] => Misc Acc
[4] => Misc Acc Desc
)
注意:我这样做是不使用偏移,但我在评论中提到它,我喜欢做这样奇怪的事情。这是令人愉快的。
当然,你可能只是这样做了相同的结果:
$str = 'Invoice No..... Sale Type Desc...... Misc Amt.... Misc Acc.. Misc Acc Desc.....................................';
print_r(array_filter(array_map('trim',explode('.', $str))));
但是,这远远要容易。
如果你不喜欢键在所有古怪的你可以在吸盘一圈的array_values。
print_r(array_values(array_filter(array_map('trim',explode('.', $str)))));
LOL,另一个星期一。
UPDATE
您可以使用文件流wappers定为CSV文件读了。在PHP5.4(我觉得还是5.3)的SplFileObj缺少fgetcsv
和我用他们一招修补该类.... :)
这是我的一点(但也有很多我不知道)
$str = 'Invoice No..... Sale Type Desc...... Misc Amt.... Misc Acc.. Misc Acc Desc.....................................
somedata .... someother stuff ... foobar ... hello ... world..
';
//pretend this is a real file
$f = fopen('php://temp', 'w+');
fwrite($f, $str);
rewind($f);
$headers = [];
$num_headers = 0;
$i = 1;
while(false !== ($c = fgetcsv($f))){
//if there is only one element assume the delimiter is wrong
if(count($c) == 1){
//you could test the string for multiple delimiters and change
/*
if(strpos($c, '.')){
$regex = '/\.+/'
}else if(strpos($c, '~')){
$regex = '/~+/'
} etc....
*/
//use memory buffer to fix files with .'s but still read them as
//a normal CSV file, php://memory is really fast.
//and this gives us all the parsing benefits of fgetcsv
//you could use any delimiter here you want.
$fixed = trim(preg_replace('/\.+/', ',', $c[0]),',');
$m = fopen('php://memory', 'w+');
fwrite($m, $fixed);
rewind($m);
$c = fgetcsv($m);
}
//trim any spaces, not a bad idea anyway
$c = array_map('trim', $c);
//if no headers use the first line of file as the header
if(empty($headers)){
$headers = $c;
//count them (see below)
$num_headers = count($headers);
continue;
}
//array_combine is a good choice for header => values
//but the arrays have to be the same size
if(count($c) != $num_headers) die("missing dilimter on line {$i}");
$line = array_combine($headers, $c);
//continue with normal csv opperation
print_r($line);
++$i; //track the line number
}
产量
Array
(
[Invoice No] => somedata
[Sale Type Desc] => someother stuff
[Misc Amt] => foobar
[Misc Acc] => hello
[Misc Acc Desc] => world
)
UPDATE
正如我在评论中提到(后查明是HTML)。您可以使用DOM解析器。我有在过去使用的是PHPQuery
它现在有点过时。但是,这是不错的,因为你可以使用jQuery语法。例如说,你有这
<ul id="title" >
<li>header</li>
<li>header</li>
<li>header</li>
</ul>
你可以像这样的东西(它已经有一段时间,因此,如果这是错误抱歉)发现
$length = $PHPQuery->find("#headers li")->lenght;
for($i=0;$i<$lenght;++$i){
echo $PHPQuery->find("#headers li:eq($i)")->text();
}
你甚至可以使用->attr('href')
例如拉属性。基本上,你可以把HTML结构的优势,拉你需要的不是转换成文本并试图删除了一堆的“东西”是什么
干杯!