I have a string that contains some values I need to extract. Each of these values is surrounded by a common character.
What is the most efficient way to extract all of these values into an array?
For example, given the following string:
stackoverflowis%value1%butyouarevery%value2%
I would like to get an array containing value1 and value2
$s = "stackoverflowis%value1%butyouarevery%value2%";
preg_match_all('~%(.+?)%~', $s, $m);
$values = $m[1];
$string = 'stackoverflowis%value1%butyouarevery%value2%';
$string = trim( $string, '%' );
$array = explode( '%' , $string );
array(4) { [0]=> string(15) "stackoverflowis" [1]=> string(6) "value1" [2]=> string(13) "butyouarevery" [3]=> string(6) "value2" }
$array[1] is one of needed strings and $array[0] not? all i want to say - your answer is not full"stackoverflowis%value1%butyouarevery%value2" ? or "%stackoverflowis%value1%butyouarevery%value2%" ?$str = "stackoverflowis%value1%butyouarevery%value2%";
preg_match_all('/%([a-z0-9]+)%/',$str,$m);
var_dump($m[1]);
array(2) { [0]=> string(6) "value1" [1]=> string(6) "value2" }
Give a try to explode. Like $array = explode('%', $string);
LE:
<?php
$s = 'stackoverflowis%value1%butyouarevery%value2%';
$a = explode('%', $s);
$a = array_filter($a, 'strlen'); // removing NULL values
$last = ''; // last value inserted;
for($i=0;$i<=count($a);$i++)
if (isset($a[$i+1]) && $a[$i] <> $last)
$t[] = $last = $a[$i+1];
echo '<pre>'; print_r($t); echo '</pre>';
Use explode and take the odd-indexed values from the resulting array. You indicated you wanted the most efficient method, and this will be faster than a regex solution.
$str = 'stackoverflowis%value1%butyouarevery%value2%';
$arr = explode('%', $str);
$ct = count($arr);
for ($i = 1; $i < $ct; $i += 2) {
echo $arr[$i] . '<br />';
}
preg_match_all('/%([^%]+)%/', $s, $match);
var_dump($match[1]);
