PHP 7.1.21 Released

Parle\RParser::trace

(PECL parle >= 0.7.0)

Parle\RParser::traceTrace the parser operation

说明

public string Parle\RParser::trace ( void )

Retrieve the current parser operation description. This can be especially useful to study the parser and to optimize the grammar.

参数

此函数没有参数。

返回值

Returns a string with the trace information.

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