How to convert 0010 to 10 in php

Conversion method: 1. Use substr() to intercept the last two characters, the syntax is "substr($str,-2)". 2. Use substr_replace() to replace the two characters with null characters starting from the beginning of the string. The syntax is "substr_replace($str,"",0,2)".

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

php will convert 0010 Method for 10:

1. Use substr()

substr() function to start from the third character of the string (index For 2) intercept 2 characters, or intercept all characters starting from the second to last character.

<?php
$str = "0010";
echo substr($str,2,2)."<br>";
echo substr($str,-2)."<br>";
?>

2. Use the substr_replace() function

substr_replace() function starts from the beginning of the string and replaces the two Characters are replaced with empty characters

<?php
$str = "0010";
echo substr_replace($str,"",0,2);
?>

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