Get compatibility mode

# trader_get_compat

(PECL trader >= 0.2.2)

trader_get_compat — Get compatibility mode

### 説明

function trader_get_compat(): int

Get compatibility mode which affects the way calculations are done by all the extension functions.

### パラメータ

この関数にはパラメータはありません。

### 戻り値

Returns the compatibility mode id which can be identified by TRADER_COMPATIBILITY_* series of constants.

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