It return a formatted string

Example

<?php
echo vsprintf(“%s %s”,array(“php”,”code”));
?>

Output

php code

It output a formatted string

Example

<?php
vprintf(“%s %s”,array(“php”,”code”));
?>

Output

php code

It writes a formatted string to a specified output stream

Example

<?php
$file = fopen(“test.txt”,”w”);
echo vfprintf($file,”%s%s”,array(“PHP”,”Code”));
?>

Output

7

It converts the first character of each word in a string to uppercase

Example

<?php
echo ucwords(“php code”);
?>

Output

Php Code

It  make a string’s first character uppercase

Example

<?php
echo ucfirst(“phpcode”);
?>

Output

Phpcode

It strips whitespace from the beginning and end of a string

Example

<?php
echo trim(” php code “);
?>

Output

php code

It returns part of a string

Example

<?php
echo substr(“phpcode”,2,4);
?>

Output

pcod

It replace text within a portion of a string

Example

<?php
echo substr_replace(“php code”,”codez”,4);
?>

Output

php codez

It counts the number of substring occurrences

Example

<?php
echo substr_count(“phpcode. phpcodez”,”code”);
?>

Output

2

It compares two strings from a specified start position

Example

<?php
echo substr_compare(“phpcodexc”,”phpcode”,0);
?>

Output

2