How to remove a certain letter from a word in php

In PHP, you can replace some characters in a string through the str_replace function. The syntax is "str_replace(find,replace,string,count)". This function is binary safe.

The operating environment of this article: windows7 system, PHP7.1 version, DELL G3 computer

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

This function must follow the following rules:

If the searched string is an array, then it will return an array.

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

If an array needs to be searched and replaced at the same time, and the elements to be replaced are less than the number of found elements, the excess elements will be replaced with empty strings.

If you search an array and replace only one string, the replacement string will work on all found values.

Note: This function is case-sensitive. Please use the str_ireplace() function to perform a case-insensitive search.

Note: This function is binary safe.

Syntax

str_replace(find,replace,string,count)

Parameters

find Required. Specifies the value to look for.

replace Required. Specifies the value to replace the value in find.

string Required. Specifies the string to be searched for.

count Optional. A variable counting the number of substitutions.

Example

Replace the character "world" in the string "Hello world!" with "Peter":

<?php
echo str_replace("world","Peter","Hello world!");
?>

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