PHP将爆炸和比较

Question

我想做的是从两个字符串中提取重复。

我给你看这个例子。

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

我首先做的是爆炸

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

为

计算元素个数

$nr1 = count($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我在var2

中缺失了

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

有人能帮我吗?

Answer 1

您可以将两个数组array_merge()，然后运行array_unique()以删除重复项，如下所示

$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
)