PHP String Trim: Removing space from left or right side & within a string

ltrim(), rtrim() and trim() Trimming the string

Remove blank space from left side of any string by using ltrim() function.

$text= " This is my text";
echo $text;
$text=ltrim($text);
echo $text;

Same way we can remove blank space from right side of any string by using rtrim() function.

$text= "This is my text ";
echo $text;
$text=rtrim($text);
echo $text;

To remove extra blank space, line break, carriage return from both sides ( left and right ) of a string we can use trim() function

$text= " This string has blank space at both sides    ";
echo $text;
$text=trim($text);
echo $text;

We can remove chars from the end of the string like this.

$str=' Hello +';
echo rtrim($str,'+');

We removed the extra '+' at the end of the string, similarly we can remove extra , or any other chars from the end of the string.

$str=' Hello Welcome';
echo rtrim($str,'come');

Output is here

Hello Wel

Remove blank space present inside a string

We may not like to have blank space present within a string (example: userid entered by user in signup page ) . We can search and inform the user about this or remove the blank space from the string variable.
We will use str_replace() to remove blank space from a string.

$new_string=str_replace(' ','',$string);
echo $new_string;

Searching for presence of white space.

We will use strstr() to check for presence of white space

$string='ABCD  XYZ';
if (strstr($string,' ')) {
echo " Blank space is  present  ";
}else{
echo " Blank space is NOT  present ";
}

String Functions first letter of every word to capitalize by using ucwords Change all alphabetic chars to lowercase Checking all lower case or upper case chars in a string

Subhendu Mohapatra

Author & Instructor at plus2net

I write and maintain practical tutorials on Python, PHP, SQL, JavaScript, HTML, jQuery, and web development at plus2net. The tutorials focus on clear explanations, working examples, and code that readers can test and adapt while learning.

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panta	29-12-2014
nice tutorials , much love and appreciations