php statistics on questionnaire results, php questionnaire results statistics_PHP tutorial

php statistics of questionnaire results, php questionnaire results statistics

Background:

Due to specific work reasons, I made a paper questionnaire. The main content of the questionnaire is to let users prioritize 10 requirements (numbered A, B...), so The results I got were hundreds of results similar to A>I>H>G>D.... etc.

Target:

Conduct a quantitative evaluation of these 10 requirements based on the user's ranking results. The final result is expected to be A: 78, B: 68, C: 70... to find out which element is relatively important and which one is more important. Some are relatively unimportant.

Method:

Based on the ranking of the numbers, assign different weights, count all the results, and summarize these weights. For example: The result "ABCDEFGHIJ" means that item A gets 10 points, item J gets 1 point, and item D gets 7 points.

Knowledge points:

File reading; looping; associative array; array sorting.

php code:

<span> 1</span> <span>$rs</span> =<span>array</span>("A"=>0,"B"=>0,"C"=>0,"D"=>0,"E"=>0,"F"=>0,"G"=>0,"H"=>0,"I"=>0,"J"=>0<span>);
</span><span> 2</span> <span>$handle</span> = <span>fopen</span>('./file.txt', 'r'<span>);
</span><span> 3</span> <span>while</span>(!<span>feof</span>(<span>$handle</span><span>))
</span><span> 4</span> <span>{
</span><span> 5</span>     <span>$string</span> = <span>fgets</span>(<span>$handle</span>, 1024<span>);
</span><span> 6</span>     <span>for</span>(<span>$i</span>=0;<span>$i</span><<span>strlen</span>(<span>$string</span>);<span>$i</span>++<span>)
</span><span> 7</span> <span>    {
</span><span> 8</span>         <span>$t</span> = <span>strtoupper</span>(<span>$string</span>[<span>$i</span><span>]);
</span><span> 9</span>         <span>if</span>(<span>isset</span>(<span>$rs</span>[<span>$t</span><span>]))
</span><span>10</span>             <span>$rs</span>[<span>$t</span>] = <span>$rs</span>[<span>$t</span>]+ <span>strlen</span>(<span>$string</span>) - <span>$i</span><span>;
</span><span>11</span> <span>    }
</span><span>12</span> <span>}
</span><span>13</span> <span>fclose</span>(<span>$handle</span><span>);
</span><span>14</span> <span>arsort</span>(<span>$rs</span><span>);
</span><span>15</span> <span>var_dump</span>(<span>$rs</span>);

Explanation: file.txt is a text file, each line of which represents the results of a questionnaire, similar to something like "ABCDEFGHIJ". How did you get this file? Okay, I admit that I didn’t enter it manually. I asked some people to help me (why not do an online questionnaire? Save me so much trouble)

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