How to remove the first character from a php string

Two removal methods: 1. Use substr() to remove. You only need to set the second parameter of the function to 1 and omit the third parameter. The syntax is "substr(string,1) ". 2. Use str_split() to convert the string into a character array, use array_shift() to delete the first character 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 Two ways to remove the first character from a string

Method 1: Use the substr() function to remove

The substr() function can be obtained from A certain length of characters is intercepted from the specified position in the string.

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 1 and omit the third parameter.

<?php
header(&#39;content-type:text/html;charset=utf-8&#39;);   
$str="Hello world";
echo "原字符串：".$str."<br>";
echo "去除第一个字符：".substr($str,1)."<br>";
?>

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

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

• Use the array_shift() function to delete the first character element in the character array

• Use the implode() function to convert the character array back to characters String

<?php
header(&#39;content-type:text/html;charset=utf-8&#39;);   
$str="ABCDEF";
echo "原字符串：".$str."<br>";
$arr=str_split($str);
array_shift($arr);
echo "去除第一位字符：".implode($arr)."<br>";
?>

Recommended learning: "PHP Video Tutorial"

The above is the detailed content of How to remove the first character from a php string. For more information, please follow other related articles on the PHP Chinese website!