How to remove the first character from a string in php

The way PHP removes the first character in a string is through the ltrim() function. This function removes whitespace characters or other predefined characters from the left side of a string. Function syntax: [ltrim()string, charlist].

To remove the first character in a string, there are many methods, as follows:

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First method: Replacement method

$str = "hello";
$str[0] = "";
// $str[0] = false;
// $str[0] = null;

Time to execute 1.000.000 tests: 0.39602184295654 seconds

Second method: Use substr() deletes the first character

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

Time to execute 1.000.000 tests: 5.153294801712 seconds

Third method: Use ltrim() to delete the first character

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

Time to execute 1.000.000 tests: 5.2393000125885 seconds

Fourth method: Use preg_replace() to delete the first character

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

Time to execute 1.000.000 tests: 6.8543920516968 seconds

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