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This article focuses on "how PHP removes characters from text and retains numbers". Interested friends may wish to take a look. The method introduced in this paper is simple, fast and practical. Let's let the editor take you to learn how PHP removes characters from text and retains numbers.

1. Use trim ($str) to remove spaces at both ends.

Use the if statement to ensure that the stripped string is not an empty string.

2. Create a character array $temp that contains 09digits respectively.

3. Use the for loop to traverse the string $str, compare each character in the $str with the elements in the $temp array, and get the numeric characters.

(use the in_array function to search for whether each character in $str exists in the $temp array, so you can determine whether the character is a numeric character.)

Example

At this point, I believe you have a deeper understanding of "PHP how to remove characters from the text and retain numbers". You might as well do it in practice. Here is the website, more related content can enter the relevant channels to inquire, follow us, continue to learn!

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