How to remove the first two characters of a string in php

php method to remove the first two characters of a string: 1. Use the substr() function, the syntax "substr($str, 2)"; 2. Use the substr_replace() function, the syntax "substr_replace($str , '', 0,2)”.

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

php removes strings The first two characters

1. Use the substr() function

The substr() function can intercept a certain length of characters from the specified position of the string. Character, returns the extracted part of the string, returns FALSE on failure, or returns an empty string.

<?php 
$str = "hello,world";
$str2 = substr($str, 2); 
echo $str2;
?>

2. Use the substr_replace() function

substr_replace() function to replace part of a string with another string .

<?php 
$str = "world";
$str2 = substr_replace($str, &#39;&#39;, 0,2); 
echo $str2;
?>

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