dp152153
dp152153
2016-08-08 15:49

PHP代码读取和写入文件精细UNTIL我比较一个子字符串

已采纳

The following PHP code works to read one file and write the same content into another file:

<?php

$input = @fopen("./temp.def", "r");
$output = @fopen("./temp.tpc","w");

if ($input) {

    while (!feof($input)) {
        $buffer = fgets($input);
        fputs($output, $buffer);
    }
    if (!feof($input)) {
        echo "Error: unexpected fgets() fail
";
    }

    fclose($input);
    fclose($output);

}

But when I add code to replace some content based off of whether or not a substring is some specific text it doesn’t work. Here’s the code for that:

<?php

$input = @fopen("./temp.def", "r");
$output = @fopen("./temp.tpc","w");

if ($input) {

    while (!feof($input)) {
        $buffer = fgets($input);

        //check to see if it is a `row`  line
        $isrow = mb_substr($buffer, 0, 5, 'UTF-8');
        if ($isrow == "row=:") {
            $data = str_ireplace("row=:", "base=:[loc^nb]" . chr(10) . "row=:", $buffer);
            else {
                $data =  $buffer;
            }
        }

        fputs($output, $data);
    }
    if (!feof($input)) {
        echo "Error: unexpected fgets() fail
";
    }

    fclose($input);
    fclose($output);

}

The only thing changed in the code is the added part, highlighted in yellow, and the variable name change, highlighted in blue...

color-highlighted code

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1条回答

  • duanjiaren8188 duanjiaren8188 5年前

    You have some weird bracing going on there. Try:

    if ($isrow == "row=:") {
        $data = str_ireplace("row=:", "base=:[loc^nb]" . chr(10) . "row=:", $buffer);
    } else {
        $data =  $buffer;
    }
    
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