删除包含非字母数字字符的字符串中的“单词”？

Question

What is the recommended method in PHP for removing 'words' in strings with non-alphanumeric characters please?

$string = "Test let's test 123. https://youtu.be/dQw4w9WgXcQ EOTest.";

desired result:

"Test test 123. EOTest.";

Method 1 - regex Method 2 - explode(), foreach() and str_replace or preg_replace

Answer 1

Try using the preg_split, preg_grep, and implode functions, like so:

$string = "Test let's test 123. https://youtu.be/dQw4w9WgXcQ EOTest.";
$words = preg_split('/\s+/', $string); // split on one or more spaces
$filter = preg_grep('/^[A-Za-z\d.]+$/', $words); // allow dot, letters, and numbers
$result = implode(' ', $filter); // turn it into a string
print_r($result); // -> Test test 123. EOTest.

I hope that helps!