How to remove the last character of a string in php

Two removal methods: 1. Use substr() to remove. You only need to set the second parameter of the function to 0 and the third parameter to (string length-1). Syntax "substr($str,0,strlen($str)-1)". 2. Use str_split() to convert the string into a character array, use array_pop() to delete the last element in the character array, and then use implode() to convert the character array back to a string.

The operating environment of this tutorial: windows7 system, PHP version 8.1, DELL G3 computer

php removes strings Two methods for the last character

Method 1: Use the substr() function to remove

The substr() function can remove the character from the string. Intercept characters of a certain length at the specified position.

substr(string,start,length)

Parameters	Description
string	Required . Specifies a part of the string to be returned.
start	Required. Specifies where in the string to begin. Positive number - starts at the specified position in the string Negative number - starts at the specified position from the end of the string 0 - at the first character in the string Start at
length	Optional. Specifies the length of the string to be returned. The default is until the end of the string. Positive number - Returns from the position of the start parameter Negative number - Returns from the end of the string

Just set the second parameter of the function to 0 and the third parameter to (string length-1).

<?php
header(&#39;content-type:text/html;charset=utf-8&#39;);   
$str="Hello world";
echo "原字符串：".$str."<br>";
echo "去除最后一位字符：".substr($str,0,strlen($str)-1)."<br>";
?>

Method 2: Use str_split() array_pop() implode() function

• Use str_split () function splits the string into an array, that is, converts the string into a character array.

• Use the array_pop() function to delete the last character element in the character array

• Use the implode() function to convert the character array back to a string

<?php
header(&#39;content-type:text/html;charset=utf-8&#39;);   
$str="Hello!";
echo "原字符串：".$str."<br>";
$arr=str_split($str);
array_pop($arr);
echo "去除最后一位字符：".implode($arr)."<br>";
?>

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