Error mysqli_num_rows () expects parameter 1 to be mysqli_result, boolean

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Error mysqli_num_rows () expects parameter 1 to be mysqli_result, boolean

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I have an error with this line of my program, it says that it lacks a parameter

mysqli_num_rows () expects parameter 1 to be mysqli_result, boolean

This is the line that tells me that I have an error

fwrite($arch, "<table:table table:name=\"".$this- 
>nombre_tabla($tabla)."\" table:style-name=\"ta1\"><table:table-column 
table:style-name=\"co1\" table:number-columns- 
repeated=\"".mysqli_num_rows($conexion->query("select * from                                                  
".$tabla))."\" table:default-cell-style-name=\"Default\" />");

php

asked by Francisco Cardenas 02.06.2018 в 00:15

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1 answer

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score 0 · Answer 1

You can try to separate the operations like this:

$resultado = $conexion->query("select * from ".$tabla);
fwrite($arch, "<table:table table:name=\"".$this->nombre_tabla($tabla)."\" 
table:style-name=\"ta1\"><table:table-column table:style-name=\"co1\" 
table:number-columns-repeated=\"".mysqli_num_rows($resultado)."\" 
table:default-cell-style-name=\"Default\" />");