27 lines
731 B
Markdown
27 lines
731 B
Markdown
---
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title: Operators
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---
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## Operators
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PHP contains all the normal operators one would expect to find in a programming language.
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A single “=” is used as the assignment operator and a double “==” or triple “===” is used for comparison.
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The usual “<” and “>” can also be used for comparison and “+=” can be used to add a value and assign it at the same time.
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Most notable is the use of the “.” to concatenate strings and “.=” to append one string to the end of another.
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New to PHP 7.0.X is the Spaceship operator (<=>).
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The spaceship operator returns -1, 0 or 1 when $a is less than, equal to, or greater than $b.
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```php
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<?php
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echo 1 <=> 1; // 0
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echo 1 <=> 2; // -1
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echo 2 <=> 1; // 1
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```
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