cadena php a Uppwe
$lowercase = "this is lower case";
$uppercase = strtoupper($lowercase);
echo $uppercase;
// THIS IS LOWER CASE
Whale
$lowercase = "this is lower case";
$uppercase = strtoupper($lowercase);
echo $uppercase;
// THIS IS LOWER CASE$firstStringCharacter = substr("hello", 0, 1);
<?php
echo substr('abcdef', 1); // bcdef
echo substr('abcdef', 1, 3); // bcd
echo substr('abcdef', 0, 4); // abcd
echo substr('abcdef', 0, 8); // abcdef
echo substr('abcdef', -1, 1); // f
// Accessing single characters in a string
// can also be achieved using "square brackets"
$string = 'abcdef';
echo $string[0]; // a
echo $string[3]; // d
echo $string[strlen($string)-1]; // f
?>
//substr() function returns certain bits of a string echo substr('hello world', 0, 5); //hello$string = (strlen($string) > 13) ? substr($string,0,10).'...' : $string;
$colors=trim("blue,red,green,",",");//remove last , with rtrim