How to remove the first and last string in php

Removal method: 1. Use the trim() function to delete substrings with the same beginning and end, the syntax is "trim($str,"specified substring")"; 2. Use the ltrim() and rtrim() functions To delete substrings with different beginning and end, the syntax is "ltrim(rtrim($str,"substring at the end"),"substring at the beginning")".

The operating environment of this tutorial: Windows 7 system, PHP version 8.1, DELL G3 computer

php remove the first and last characters String method

#Case 1: Delete strings with the same beginning and end--use trim()

trim() to delete both strings Specified substring on the side

<?php
$str = &#39;abc12345abc&#39;;
echo $str . "<br>";
echo trim($str,"abc");
?>

Case 2: Delete strings with different beginning and end--use ltrim() and rtrim()

• ltrim() - Removes the specified substring on the left side of the string

• rtrim() - Removes the specified substring on the right side of the string

<?php
$str = &#39;ABC12345abc&#39;;
echo $str . "<br>";
echo ltrim(rtrim($str,"abc"),"ABC");
?>

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