Here are some inbuilt string functions in php which will
help you to do enough manipulation with the
strings.
Source code:-
/*******************************************************************/
<html>
<head>
<title>Inbuilt
string functions</title>
</head>
<body>
<?php
$str1="just
stay on the problem";
$str2="
a bit longer than others";
echo
"string 1 = ".$str1."<br />";
echo
"string 2 = ".$str2."<br />";
/*to
convert the whole stirng to upper case*/
echo
"str to upper = ".strtoupper($str1)."<br />";
/*to
convert the whole string to lower case*/
echo
"str to lower = ".strtolower($str2)."<br />";
/*to
find the length of string*/
echo
"length of string = ".strlen($str1)."<br />";
/*to
make first character of string uppercase */
echo
"ucfirst = ".ucfirst($str1)."<br />";
/*
to make first characters of all the words in string uppercase*/
echo
"ucword = ".ucwords($str1)."<br />";
/*to
repeat the specified string 5 times */
echo
"str_repeat = ".str_repeat($str1,5)."<br />";
/*to
form a sub string from the main string*/
echo
"substr = ".substr($str1,5,15)."<br />";
/*to
find the index number of a sub string in main string*/
echo
"strpos = ".strpos($str1,"on")."<br />";
/*
to replace "the" from "your" */
echo
"str_replace =
".str_replace("the","your",$str1)."<br
/>";
/*
to find sub string inmain string and then print all
the
characters following the sub string from main string*/
echo
"strstr = ".strstr($str1,"the")."<br />";
/*
to find a character in main string and then print all
the
characters following that character from the main string*/
echo
"strchr = ".strchr($str1,"t")."<br />";
/*
to concatenate two strings ignoring space if the second
string
contains a blank space as its first character */
echo
"trim = ".$str1.trim($str2);
?>
</body>
</html>
/******************************************************************/
Output:-
string 1 = just stay on the problem
string 2 = a bit longer than others
str to upper = JUST STAY ON THE PROBLEM
str to lower = a bit longer than others
length of string = 24
ucfirst = Just stay on the problem
ucword = Just Stay On The Problem
str_repeat = just stay on the problemjust stay on the problemjust stay on the problemjust stay on the problemjust stay on the problem
substr = stay on the pro
strpos = 10
str_replace = just stay on your problem
strstr = the problem
strchr = t stay on the problem
trim = just stay on the problema bit longer than others
string 2 = a bit longer than others
str to upper = JUST STAY ON THE PROBLEM
str to lower = a bit longer than others
length of string = 24
ucfirst = Just stay on the problem
ucword = Just Stay On The Problem
str_repeat = just stay on the problemjust stay on the problemjust stay on the problemjust stay on the problemjust stay on the problem
substr = stay on the pro
strpos = 10
str_replace = just stay on your problem
strstr = the problem
strchr = t stay on the problem
trim = just stay on the problema bit longer than others
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