PHP/operator
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| operator | name | example | meaning | familiarity | docs |
|---|---|---|---|---|---|
| == | Equal | $a == $b |
true if $a is equal to $b after type juggling. | common | Comparison Operators |
| === | Identical | $a === $b |
true if $a is equal to $b, and they are of the same type. | common-ish | Comparison Operators |
| != | Not equal | $a != $b |
true if $a is not equal to $b after type juggling. | common | Comparison Operators |
| <> | Not equal | $a <> $b |
true if $a is not equal to $b after type juggling. | common | |
| !== | Not identical | $a !== $b |
true if $a is not equal to $b, or they are not of the same type. | common | |
| < | Less than | $a < $b |
true if $a is strictly less than $b. | common | |
| > | Greater than | $a > $b |
true if $a is strictly greater than $b. | common | |
| <= | Less than or equal to | $a <= $b |
true if $a is less than or equal to $b. | common | |
| >= | Greater than or equal to | $a >= $b |
true if $a is greater than or equal to $b. | common | |
| <=> | spaceship | $a <=> $b |
An int less than, equal to, or greater than zero when $a is less than, equal to, or greater than $b, respectively. | common | |
| ?: | ternary | $A ? $B : $C |
"if $A is true, then $B, else $C" | less common | |
| ?? | null coalescing | $A ?? $B |
"$A if it isn't NULL, else $B" | rare | Comparison Operators: Null Coalescing Operator |