php从一个单词后面返回字符串

MY question is So simple. i have this string:

$main = "this is my main string here that i want to cut it and return here !";

And my key is:

$key = "main";

Now, i want to have this output:

$output = "main string here that i want to cut it and return here !";

I mean i want to have that output , from my main word till end of sentence!

How can i do it with PHP ?

You can use this code.

$main = "this is my main string here that i want to cut it and return here !";
echo strstr($main , 'main');

try this

$str="this is my main string here that i want to cut it and return here !";
echo strstr($str, 'main');

$main = "this is my main string here that i want to cut it and return here !";
$key = "main";
echo substr($main,strpos($main,$key));

Using strpos you can find the first ocurrence of $key in $main:

$main = "this is my main string here that i want to cut it and return here !";
$key = "main";
$x = strpos($main, $key);
$result = substr($main, $x);
echo $result;

Try Below code :

$main="this is my main string here that i want to cut it and return here !";
echo strstr($main, 'main');

For More Details:

strpos find first position of substring, 'main' in our case. It return 11, put it into $tmp. substr return part of our string $main from start to $tmp position. As result main string here that i want to cut it and return here!

$main = "this is my main string here that i want to cut it and return here !";
$tmp = strpos($main, "main");

echo substr($main, $tmp);