1.2.876. One Variable String¶
These strings only contains one variable or property or array.
When the goal is to convert a variable to a string, it is recommended to use the type casting (string) operator : it is then clearer to understand the conversion. It is also marginally faster, though very little.
<?php
$a = 0;
$b = "$a"; // This is a one-variable string
// Better way to write the above
$b = (string) $a;
// Alternatives :
$b2 = "$a[1]"; // This is a one-variable string
$b3 = "$a->b"; // This is a one-variable string
$c = "d";
$d = "D";
$b4 = "{$$c}";
$b5 = "{$a->foo()}";
?>
See also Strings and Type Juggling.
1.2.876.1. Suggestions¶
Drop the surrounding string, keep the variable (or property…)
Include in the string any concatenation that comes unconditionally after or before
Convert the variable to a string with the (type) operator
1.2.876.2. Specs¶
Short name |
Type/OneVariableStrings |
Rulesets |
|
Exakat since |
0.8.4 |
PHP Version |
All |
Severity |
Minor |
Time To Fix |
Instant (5 mins) |
Precision |
Very high |
Features |
string, variable, interpolation |
Examples |
|
Available in |