fwrite | 易学教程

php---如何在命令行下运行PHP脚本[带参数]

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创建一个简单的文本文件，其中包含有以下PHP代码，并把它保存为hello.php： <?php echo "Hello from the CLI"; ?> 现在，试着在命令行提示符下运行这个程序，方法是调用CLI可执行文件并提供脚本的文件名： #php phphello.php 输出Hello from the CLI ----------------- 使用标准的输入和输出你可以在自己的PHP脚本里使用这三个常量，以接受用户的输入，或者显示处理和计算的结果。要更好地理解这一点，可以看看下面的脚本（列表A）：列表A <?php // ask for input fwrite(STDOUT, "Enter your name: "); // get input $name = trim(fgets(STDIN)); // write input back fwrite(STDOUT, "Hello, $name!"); ?> Look what happens when you run it: shell> php hello.php Enter your name: Joe Hello, Joe! 在这个脚本里，fwrite()函数首先会向标准的输出设备写一条消息，询问用户的姓名。然后它会把从标准输入设备获得的用户输入信息读取到一个PHP变量里，并它把合并成为一个字符串

fwrite()

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fwrite(),最好写strlen()个字节，否则可能有乱码来源： https://www.cnblogs.com/xpylovely/p/11402079.html

how to write php code to a file with php

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问题 For part of my website I need to be able to write php code to a file with php. For example: $filename = "RtestR.php"; $ourFileName =$filename; $ourFileHandle = fopen($ourFileName, 'w'); $written = " <html> <body> <?php echo \"I like the color \".$_SESSION['color'].\"!!!!\"; </body> </html> "; fwrite($ourFileHandle,$written); fclose($ourFileHandle); But, instead of creating the file, it throws this error: Parse error: syntax error, unexpected T_ENCAPSED_AND_WHITESPACE, expecting T_STRING or T

fwrite()

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fwrite()不用写字符串结束标志 fwrite(buf, 1, strlen(buf), fp);//正确 fwrite(buf, 1, strlen(buf) + 1, fp);//正确来源： https://www.cnblogs.com/xpylovely/p/11395968.html

Multiple users write to the same file at the same time using PHP

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问题 I have a website where at the same moment, there can be multiple users writing to the same file at the same time. An example of my code is below. PHP 5.6.20 <?php $root=realpath($_SERVER["DOCUMENT_ROOT"]); $var=time()."|"; echo $var."<br/>"; $filename=$root."/Testing/Testing/test1.txt"; $myfile=fopen($filename,"a"); fwrite($myfile,$var); fclose($myfile); $myfile=fopen($filename,"r"); $contents = fread($myfile, filesize($filename)); echo $contents; fclose($myfile); ?> I read that in PHP if

fwrite() - effect of size and count on performance

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问题 There seems to be a lot of confusion regarding the purpose of the two arguments 'size' and 'count' in fwrite(). I am trying to figure out which will be faster - fwrite(source, 1, 50000, destination); or fwrite(source, 50000, 1, destination); This is an important decision in my code as this command will be executed millions of times. Now, I could just jump to testing and use the one which gives better results, but the problem is that the code is intended for MANY platforms. So, How can I get a

How to update an ini file with php?

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I have an existing ini file that I have created and I would like to know if there was a way to update a section of the file or do I have have to rewrite the entire file each time? Here is an example of my config.ini file: [config] title='test' status=0 [positions] top=true sidebar=true content=true footer=false Say I want to change the [positions] top=false . So would I use the parse_ini_file to get all of the infromation then make my changes and use fwrite to rewrite the whole file. Or is there a way just to change that section? I used the first suggestion of you: So would I use the parse_ini

how to write an integer to a file (the difference between fprintf and fwrite)

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问题 I've been trying to write an integer to a file (open mode is w). fprintf wrote it correctly but fwrite wrote gibberish: int length; char * word = "word"; counter = strlen(word); fwrite(&length, sizeof(int), 1, file); fwrite(word, sizeof(char), length, file); and the result in the file is: word but if I use fprintf instead, like this: int length; char * word = "word"; counter = strlen(firstWord); fprintf(file, "%d", counter); fwrite(word, sizeof(char), length, file); I get this result in the

PHP Excel Header

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header("Content-Type: application/vnd.ms-excel; charset=utf-8"); header("Content-type: application/x-msexcel; charset=utf-8"); header("Content-Disposition: attachment; filename=abc.xsl"); header("Expires: 0"); header("Cache-Control: must-revalidate, post-check=0, pre-check=0"); header("Cache-Control: private",false); echo "Some Text" Here is code to write and download xsl file using php, my problem is when i open excel file MS-Excel show warning before opening file says The file you are trying to open is in different format than specified by the file extension...Blah blah What's to do with PHP

fwrite() and UTF8

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I am creating a file using php fwrite() and I know all my data is in UTF8 ( I have done extensive testing on this - when saving data to db and outputting on normal webpage all work fine and report as utf8.), but I am being told the file I am outputting contains non utf8 data :( Is there a command in bash (CentOS) to check the format of a file? When using vim it shows the content as: Donâ~@~Yt do anything .... Itâ~@~Ys a great site with everything....Weâ~@~Yve only just launched/ Any help would be appreciated: Either confirming the file is UTF8 or how to write utf8 content to a file. UPDATE To