How does php remove part of a string

This article introduces the knowledge of "how to remove part of a string from php". In the operation of actual cases, many people will encounter such a dilemma, so let the editor lead you to learn how to deal with these situations. I hope you can read it carefully and be able to achieve something!

1. Create a sample PHP file.

2. Define a string.

3. Remove a part of the string through the str_replace function.

$str = 'abc123abc';echo str_replace (' 123,'', $str)

Introduction to str_replace ():

The str_replace () function replaces some characters in the string with other characters (case sensitive).

The function must follow the following rules:

If the search string is an array, it returns the array.

If the search string is an array, it will find and replace each element in the array.

If the array needs to be found and replaced at the same time, and the number of elements that need to be replaced is less than the number of elements found, then the remaining elements will be replaced with an empty string

If you are looking for an array and replacing a string, the alternative string will have an effect on all found values.

Note: this function is case sensitive. Use the str_ireplace () function to perform a case-insensitive search.

This function is binary secure.

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