How to remove the middle characters in php

In PHP, you can use the "substr_replace()" function to remove a few characters in the middle. This function is used to replace part of a string with another string. Just set the replaced part to Just leave it empty, and the syntax is "substr_replace(string, "", remove character position, remove character number)".

The operating environment of this article: Windows 10 system, PHP version 7.1, Dell G3 computer

How to remove the middle characters in php

substr_replace() function replaces part of a string with another string.

If the start parameter is a negative number and length is less than or equal to start, length is 0.

This function is binary safe.

Syntax

substr_replace(string,replacement,start,length)

• string Required. Specifies the string to check.

• replacement Required. Specifies the string to be inserted.

• start Required. Specifies where in the string to begin replacement. Positive number - starts at the specified position in the string, negative number - starts at the specified position from the end of the string, 0 - starts at the first character in the string

• length available select. Specifies how many characters to replace. The default is the same as the string length. Positive number - the length of the string to be replaced, negative number - the number of characters to be replaced from the end of the string, 0 - insertion instead of replacement

Return value: Returns the replaced string . If string is an array, the array is returned.

The example is as follows:

<?php
echo substr_replace("Helloworldworld","",5,5); 
?>

Output result:

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