Simple types / Strings
Empty strings
Character count
Substring search
Substring index
Substring replacement
Getting a substring
Substring insertion
Substring removal
String comparison
String interpolation
Converting to a number
Iterating over a string
Change the case of characters
Removing spaces
Split into an array
Character replacement
Replace multiple characters
Multiline string literal
String concatenation
Concatenating a list of strings
String multiplication
String padding
Escaping characters
Generate a random string
<?php
$str =
str_repeat
(
"7"
,
3
);
// str is "777"
echo
"str is '
$str
'"
;