问题
i want to explode a string two time and make a multi-dimensional array.
$data = "i love funny movies \n i love stackoverflow dot com \n i like rock song";
$data = explode("\n", $data);
so a print_r($data);
will output:
Array
(
[0] => i love funny movies
[1] => i love stackoverflow com
[2] => i like rock song
)
now if i do like this:
$line_data = explode(" ", $data); // explode $data variable by spaces.
a print_r($line_data);
will give me this:
Array
(
[0] => i
[1] => love
[2] => funny
[3] => movies
[4] =>
[5] => i
[6] => love
[7] => stackoverflow
[8] => dot
[9] => com
[10] =>
[11] => i
[12] => like
[13] => rock
[14] => song
)
but what i want to achive will look like this:
Array
(
[0][0] => i
[0][1] => love
[0][2] => funny
[0][3] => movies
[0][4] =>
[1][5] => i
[1][6] => love
[1][7] => stackoverflow
[1][8] => dot
[1][9] => com
[1][10] =>
[2][11] => i
[2][12] => like
[2][13] => rock
[2][14] => song
)
here, the first index should represent the line number and second index will represent the word number.
How to explode the string to have such array?
回答1:
Do it:
$data = "i love funny movies \n i love stackoverflow dot com \n i like rock song";
$data = explode(" \n ", $data);
$out = array();
$step = 0;
$last = count($data);
$last--;
foreach($data as $key=>$item){
foreach(explode(' ',$item) as $value){
$out[$key][$step++] = $value;
}
if ($key!=$last){
$out[$key][$step++] = ' '; // not inserting last "space"
}
}
print '<pre>';
print_r($out);
print '</pre>';
OUTPUT (what you need):
Array
(
[0] => Array
(
[0] => i
[1] => love
[2] => funny
[3] => movies
[4] =>
)
[1] => Array
(
[5] => i
[6] => love
[7] => stackoverflow
[8] => dot
[9] => com
[10] =>
)
[2] => Array
(
[11] => i
[12] => like
[13] => rock
[14] => song
)
)
回答2:
First, explode the string by newline. Now you have an array. Iterate over the values of this array and explode each value by space. The following code does exactly this:
$data = "i love funny movies \n i love stackoverflow dot com \n i like rock song";
$data = explode("\n ", $data);
$num = 0;
foreach($data as &$val){
$exp = explode(" ", $val);
$val = array_combine(range($num, $num+sizeof($exp)-1), $exp);
$num += sizeof($exp);
}
print_r($data);
Alternative solution with array_search and array_slice:
$data = "i love funny movies \n i love stackoverflow dot com \n i like rock song";
$data = explode(" ", $data);
$arr = array();
while($search = array_search("\n", array_values($data))){
$arr[] = array_merge(array_slice($data, 0, $search, true), array(""));
$data = array_slice($data, $search+1, null, true);
}
$data = array_merge($arr, array($data));
print_r($data);
The output will be:
Array
(
[0] => Array
(
[0] => i
[1] => love
[2] => funny
[3] => movies
[4] =>
)
[1] => Array
(
[5] => i
[6] => love
[7] => stackoverflow
[8] => dot
[9] => com
[10] =>
)
[2] => Array
(
[11] => i
[12] => like
[13] => rock
[14] => song
)
)
回答3:
You can use this solution without using explode:
$data = "i love funny movies \n i love stackoverflow dot com \n i like rock song";
$line_data = explode(" ", $data);
$arrayLines = [];
for($i = 0, $j = 0; $i < count($line_data); $i++) {
if($line_data[$i] != "\n") {
$arrayLines[$j][$i] = $line_data[$i];
} else {
$arrayLines[$j][$i] = $line_data[$i];
$j++;
}
}
print_r($arrayLines);
回答4:
$line_data = array();
foreach($data as $key => $d){
$line_data[$key] = explode(' ', $d);
}
回答5:
Try
$data = "i love funny movies \n i love stackoverflow dot com \n i like rock song";
$data = explode("\n", $data);
for($i=0;$i<count($data);$i++){
$data[$i] = explode(" ",$data[$i]);
}
demo here
回答6:
If you like it quick and dirty:
foreach($data = explode("\n",$data) as &$d) {
$d = explode(' ',$d);
}
来源:https://stackoverflow.com/questions/21463420/php-explode-and-assign-it-to-a-multi-dimensional-array