Squiz.Strings.ConcatenationSpacing.md

Pattern: Malformed concatenation spacing

Issue: -

Description

This rule enforces padding around concatenation operators.

Configuration

By default, the rule ensures there are zero spaces before and after the concatenation operator, as shown in the following code snippet:

$foo = $number.'-'.$letter;

Another common way of padding concatenation operators is to use a single space, as shown in the following code snippet:

$foo = $number . '-' . $letter;

If you prefer to write your code like this, you can set the spacing property to 1, or whatever padding you prefer.

<rule ref="Squiz.Strings.ConcatenationSpacing">
    <properties>
        <property name="spacing" value="1" />
    </properties>
</rule>

Sometimes long concatenation statements are broken over multiple lines to work within a maximum line length, but this rule will generate an error for these cases by default. Setting the ignoreNewlines property to true will allow newline characters before or after a concatenation operator, and any required padding for alignment.

<rule ref="Squiz.Strings.ConcatenationSpacing">
    <properties>
        <property name="ignoreNewlines" value="true" />
    </properties>
</rule>

Further Reading

• PHP_CodeSniffer - Squiz.Strings.ConcatenationSpacing