How to remove the first character of string in PHP?

Question

$str=\':this is a applepie :) \';

How to use PHP, Remove the first character :

Answer 1

The substr() function will probably help you here:

 $str = substr($str, 1);

Strings are indexed starting from 0, and this functions second parameter takes the cutstart. So make that 1, and the first char is gone.

Answer 2

Trims occurrences of every word in an array from the beginning and end of a string + whitespace and optionally extra single characters as per normal trim()

<?php
function trim_words($what, $words, $char_list = '') {
    if(!is_array($words)) return false;
    $char_list .= " \t\n\r\0\x0B"; // default trim chars
    $pattern = "(".implode("|", array_map('preg_quote', $words)).")\b";
    $str = trim(preg_replace('~'.$pattern.'$~i', '', preg_replace('~^'.$pattern.'~i', '', trim($what, $char_list))), $char_list);
    return $str;
}

// for example:
$trim_list = array('AND', 'OR');

$what = ' OR x = 1 AND b = 2 AND ';
print_r(trim_words($what, $trim_list)); // => "x = 1 AND b = 2"

$what = ' ORDER BY x DESC, b ASC, ';
print_r(trim_words($what, $trim_list, ',')); // => "ORDER BY x DESC, b ASC"
?>

Answer 3

To remove first Character of string in PHP,

$string = "abcdef";     
$new_string = substr($string, 1);

echo $new_string;
Generates: "bcdef"

Answer 4

Exec time for the 3 answers :

Remove the first letter by replacing the case

$str = "hello";
$str[0] = "";
// $str[0] = false;
// $str[0] = null;
// replaced by �, but ok for echo

Exec time for 1.000.000 tests : 0.39602184295654 sec

---

Remove the first letter with substr()

$str = "hello";
$str = substr($str, 1);

Exec time for 1.000.000 tests : 5.153294801712 sec

---

Remove the first letter with ltrim()

$str = "hello";
$str= ltrim ($str,'h');

Exec time for 1.000.000 tests : 5.2393000125885 sec

---

Remove the first letter with preg_replace()

$str = "hello";
$str = preg_replace('/^./', '', $str);

Exec time for 1.000.000 tests : 6.8543920516968 sec

Answer 5

Use substr:

$str = substr($str, 1); // this is a applepie :)

Answer 6

Update

After further tests, I don't recommend using this any more. It caused a problem for me when using the updated string in a MySQL query, and changing to substr fixed the problem. I thought about deleting this answer, but comments suggest it is quicker somehow so someone might have a use for it. You may find trimming the updated string resolves string length issues.

---

Sometimes you don't need a function:

$str[0] = '';

For example:

$str = 'AHello';
$str[0] = '';
echo $str; // 'Hello'

This method modifies the existing string rather than creating another.