PHP多维数组搜索(编辑和保存结果)
我从一个文件中得到一个数组,如下所示PHP多维数组搜索(编辑和保存结果),php,search,multidimensional-array,Php,Search,Multidimensional Array,我从一个文件中得到一个数组,如下所示 0:uploads/Zdjęcie0232.jpg 0:uploads/Zdjęcie0222.jpg 0:uploads/duparomana.jpg 0:uploads/dddfsdfsd.jpg 0:uploads/6.jpg <?php $licznik = 0; $target_dir = "uploads/"; $target_file = $target_dir . basename($_FILES["fileToUpload"]["n
0:uploads/Zdjęcie0232.jpg
0:uploads/Zdjęcie0222.jpg
0:uploads/duparomana.jpg
0:uploads/dddfsdfsd.jpg
0:uploads/6.jpg
<?php
$licznik = 0;
$target_dir = "uploads/";
$target_file = $target_dir . basename($_FILES["fileToUpload"]["name"]);
$uploadOk = 1;
$imageFileType = strtolower(pathinfo($target_file,PATHINFO_EXTENSION));
// Check if image file is a actual image or fake image
if(isset($_POST["submit"])) {
$check = getimagesize($_FILES["fileToUpload"]["tmp_name"]);
if($check !== false) {
echo "File is an image - " . $check["mime"] . ".";
$uploadOk = 1;
} else {
echo "File is not an image.";
$uploadOk = 0;
}
}
// Check if file already exists
if (file_exists($target_file)) {
}
/* Check file size
}*/
// Allow certain file formats
if($imageFileType != "jpg" && $imageFileType != "png" && $imageFileType != "jpeg"
&& $imageFileType != "gif" ) {
echo "Sorry, only JPG, JPEG, PNG & GIF files are allowed.";
$uploadOk = 0;
}
// Check if $uploadOk is set to 0 by an error
if ($uploadOk == 0) {
echo "Sorry, your file was not uploaded.";
// if everything is ok, try to upload file//
} else {
if (move_uploaded_file($_FILES["fileToUpload"]["tmp_name"], $target_file)) {
echo "The file ". basename( $_FILES["fileToUpload"]["name"]). " has been uploaded.";
// open file to read
$fp = fopen("database.dat", "r");
$separator=':';
//read data
$stareDane = fread($fp, filesize("database.dat"));
// close file
fclose($fp);
// create new data
$noweDane = $licznik . $separator . $target_file;
$noweDane .= PHP_EOL . $stareDane;
// open file to write
$fp = fopen("database.dat", "w");
// save data
fputs($fp, $noweDane);
// close file
fclose($fp);
} else {
echo "Sorry, there was an error uploading your file.";
}
}
echo "Zaraz nastąpi przekierowanie";
sleep (3);
header("Location: /index.php?filename=$target_file", true, 301);
exit();
?>
它是由上传制作的,看起来像这样
0:uploads/Zdjęcie0232.jpg
0:uploads/Zdjęcie0222.jpg
0:uploads/duparomana.jpg
0:uploads/dddfsdfsd.jpg
0:uploads/6.jpg
<?php
$licznik = 0;
$target_dir = "uploads/";
$target_file = $target_dir . basename($_FILES["fileToUpload"]["name"]);
$uploadOk = 1;
$imageFileType = strtolower(pathinfo($target_file,PATHINFO_EXTENSION));
// Check if image file is a actual image or fake image
if(isset($_POST["submit"])) {
$check = getimagesize($_FILES["fileToUpload"]["tmp_name"]);
if($check !== false) {
echo "File is an image - " . $check["mime"] . ".";
$uploadOk = 1;
} else {
echo "File is not an image.";
$uploadOk = 0;
}
}
// Check if file already exists
if (file_exists($target_file)) {
}
/* Check file size
}*/
// Allow certain file formats
if($imageFileType != "jpg" && $imageFileType != "png" && $imageFileType != "jpeg"
&& $imageFileType != "gif" ) {
echo "Sorry, only JPG, JPEG, PNG & GIF files are allowed.";
$uploadOk = 0;
}
// Check if $uploadOk is set to 0 by an error
if ($uploadOk == 0) {
echo "Sorry, your file was not uploaded.";
// if everything is ok, try to upload file//
} else {
if (move_uploaded_file($_FILES["fileToUpload"]["tmp_name"], $target_file)) {
echo "The file ". basename( $_FILES["fileToUpload"]["name"]). " has been uploaded.";
// open file to read
$fp = fopen("database.dat", "r");
$separator=':';
//read data
$stareDane = fread($fp, filesize("database.dat"));
// close file
fclose($fp);
// create new data
$noweDane = $licznik . $separator . $target_file;
$noweDane .= PHP_EOL . $stareDane;
// open file to write
$fp = fopen("database.dat", "w");
// save data
fputs($fp, $noweDane);
// close file
fclose($fp);
} else {
echo "Sorry, there was an error uploading your file.";
}
}
echo "Zaraz nastąpi przekierowanie";
sleep (3);
header("Location: /index.php?filename=$target_file", true, 301);
exit();
?>
我想搜索database.dat中是否存在文件路径的行。接下来,我想将:
之前的数字增加一,然后在不将此文件(图片)再次保存到文件夹中的情况下离开。我尝试了一些已经在这里制作的帖子,但是我真的被卡住了
我使用的数组示例如下:
array (size=24) 0 =>
array (size=2)
0 => string '0' (length=1)
1 => string 'uploads/Zdjęcie0232.jpg ' (length=25) 1 =>
array (size=2)
0 => string '0' (length=1)
1 => string 'uploads/Zdjęcie0228.jpg ' (length=25) 2 =>
array (size=2)
0 => string '0' (length=1)
1 => string 'uploads/Zdjęcie0262.jpg ' (length=25)
除非database.dat非常大,否则我可能会将整个文件读入内存,并对其进行替换,然后覆盖。你可以试试这样的。它使用正则表达式查找数据并计算新数字
if (file_exists($target_file)) {
$matches = false;
$pattern = "~(\d+)(:".$target_file."$)~";
$data = file_get_contents('database.dat');
preg_match($pattern, $data, $matches);
if($matches) {
$oldLine = $matches[0];
$newLine = ($matches[1]+1).$matches[2];
$newData = str_replace($oldLine, $newLine, $data);
file_put_contents('database.dat', $newData, LOCK_EX);
}
}
这是否符合您的要求?file_exists()是检查文件是否已存在的正确方法。我不确定我是否理解你的问题。我有一个.dat文件,其中的文件保存为[points]:[filename],我想检查这个.dat文件是否存在,并编辑[points]的数量,你已经知道如何循环文件。您只想知道如何检查文件是否存在,如果存在,如何更改文件名?如果文件名是唯一的,您可以尝试创建一个数组作为
['filename1'=>0,'filename2'=>1,…]
,另存为或作为@christrilling,是的,我知道如何通过$arr=explode(“\n,$file”)循环;foreach($arr as$key=>$dat){$arr[$key]=explode(“:”,$dat);}
但问题是我不知道如何从这些值中取出并对它们进行操作,例如,我想知道$arr[][
中的哪一行,并更改$arr[][0]的值
我在这一点上被绊住了,这是我在这次冲刺中需要做的最后一件事……你能解释一下它是如何工作的吗?我测试了它,数字没有变化0:uploads/Zdjęcie0232.jpg 0:uploads/Zdjęcie0232.jpg 0:uploads/Zdjęcie0232.jpg 0:uploads/Zdjęcie0222.jpg
确定,哪个部分?正则表达式(preg\u replace)或数据更新?我真的不知道这是如何工作的,这个模式看起来不太容易理解。模式只是(\d+)寻找一个数字,然后是我们正在寻找的行的一部分,然后是$target\u文件,这是我们正在寻找的文件,以及$which标志着行的结束。您能回显$newName以查看它包含的内容吗?我想我看到问题了,我要编辑了。@DzikaSuślica:现在检查一下。