How to remove the first number in data in php

Implementation method: 1. Use substr(), the syntax "substr("data value", 1)"; 2. Use preg_replace() with regular expressions, the syntax "preg_replace('/^./' , '',"data value")", searches for the first character of the specified data and replaces it with a null character.

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

Remove the first number in the data, and Just remove the first character of the data. Two methods are introduced below

Method 1: Use the substr() function

The substr() function can intercept all characters after the first character to achieve removal The first character of the numeric string.

<?php
$num = 1234567;
echo substr($num, 1);
?>

Method 2: Use the preg_replace() function with regular expressions

Use regular expressions to search for the digit string One character, replace it with an empty character

<?php
$num = 1234567;
echo preg_replace(&#39;/^./&#39;, &#39;&#39;, $num);
?>

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