How to remove the second character from a php string

In PHP, you can use the substr_replace() function to remove the second character in the string. You only need to use this function to replace the second character with the empty character "''". The syntax is "substr_replace ($str, '', 1,1)".

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

In php, you can use the substr_replace() function to remove the second character from the string.

The substr_replace() function is a replacement function that can replace characters of a specified length starting from a specified position.

Syntax:

mixed substr_replace ( mixed $string , mixed $replacement , mixed $start [, mixed $length ] )

• substr_replace() Replaces the substring qualified by the start and optional length parameters in a copy of string string using replacement.

• If start is a positive number, replacement will start from the start position of string. If start is negative, the replacement will start at the start position from the bottom of string.

• If the length parameter is set and is a positive number, it represents the length of the replaced substring in string. If set to a negative number, it represents the number of characters from the end of the substring to be replaced from the end of string. If this parameter is not provided, the default is strlen(string) (the length of the string). Of course, if length is 0, then the function of this function is to insert replacement at the start position of string.

If you want to remove only the second character, you only need to set start and length to 1, and replacements to the empty character "''".

<?php
header("Content-type:text/html;charset=utf-8");
$str = &#39;hello world&#39;;
$replace = &#39;&#39;;
echo substr_replace($str, &#39;&#39;, 1,1);
?>

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