php拖爆比较

Question

我想做的是从两个字符串中提取重复项。

我给你举个例子。

$var_1 = blue, yellow, red, purple, black 
$var_2 = blue red, green, black

我最初做的是爆炸

$var1 = explode(",", $var_1);
$var2 = explode(",", $var_2);

我计算元素做一个for

$nr1 = count($var2);
$nr2 = count($var2);
 
for($x = 0; $x < $nr1; $x++){
  for($y = 0; $y < $nr2; $y++){
    if (strcmp($var1[$x], $var2[$y]) !== 0) {
      echo ($var1[$x] == $var2[$y]) ? 'true<br>' : $var1[$x].'<br>';
    }
  }
}

我得到了重复的结果，但我在 var2

中丢失了

blue blue blue yellow yellow yellow red red red purple purple purple
black black

当我期望的结果是

blue, yellow, red, purple, red, green, black

有人可以帮助我吗？

Answer 1

您可以 array_merge() 2 个数组，然后运行 array_unique() 删除重复项，这样

$var_1 = 'blue, yellow, red, purple, black';
$var_2 = 'blue, red, green, black';

$No_Dups = array_unique( array_merge( explode(",", $var_1), explode(",", $var_2)));
print_r($merged);

结果

Array
(
    [0] => blue
    [1] =>  yellow
    [2] =>  red
    [3] =>  purple
    [4] =>  black
    [7] =>  green
)

php拖爆比较

php tow explode and compare

php

compare

explode