Character replacement
Basic 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
Changing letter case
Removing spaces
Splitting into an array
Character replacement
Replacing multiple characters
Multiline string literal
String concatenation
Concatenating a list of strings
Repeating a string
String padding
Escaping characters
Generating a random string
<?php
$str =
"1-3-2"
;
$str[
2
] =
"2"
;
$str[
4
] =
"3"
;
echo $str;
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