PHP ltrim() Function

The ltrim() function removes whitespaces or other predefined characters from the left side of a string.

• rtrim() - Removes spaces or other predefined characters from the right side of a string.
• trim() - Removes spaces or other predefined characters from both sides of a string.

ltrim(string,charlist)

• string - (Required) Specify the string to check.
• charlist - (Optional) Specifies the characters to remove from the string.

  	If the parameter is empty, the following characters are removed. 
  	"\0" – NULL 
  	"\t" – tab 
  	"\n" – line break 
  	"\x0B" – vertical tab 
  	"\r" – carriage return 
  	" " - normal whitespace
  

<?php
$str = "  Hi  ,  Welcome  ";
//Remove whitespace from the beginning of the string
$txt = ltrim($str);
echo "Original string: '$str'"."<br>";
echo "ltrim string: '$txt'";
?>

Original string: ' Hi , Welcome '
ltrim string: 'Hi , Welcome '