回答編集履歴

ちょうせい

2019/10/04 08:05

投稿

yambejp

スコア114784

test CHANGED Viewed

@@ -470,7 +470,7 @@
 $no     =get_post("no");
-$fname  ="x.txt";
+$fname  ="keijiban.txt";
 if(!file_exists($fname)) die("no file");

調整

2019/10/04 08:05

投稿

yambejp

スコア114784

test CHANGED Viewed

@@ -443,3 +443,221 @@
 ```
+# むちゃくちゃ古くても動く書き方
+```PHP
+<?php
+header('content-type:text/html;charset=UTF8');
+session_start();
+function get_post($val){
+  return isset($_POST[$val])?$_POST[$val]:null;
+}
+$s      =get_post("s");
+$name   =get_post("name");
+$comment=get_post("comment");
+$no     =get_post("no");
+$fname  ="x.txt";
+if(!file_exists($fname)) die("no file");
+if($s==="編集"){
+  $fp=fopen($fname,"r");
+  while(($row=fgetcsv($fp,1024))!==false){
+    $rows[]=$row;
+  }
+  fclose($fp);
+  foreach($rows as $val){
+    if($val[0]===$no) $rec[]=$val;
+  }
+  if(count($rec)>0){
+    $rec=array_shift($rec);
+    $_SESSION["name"]    =$rec[1];
+    $_SESSION["comment"] =$rec[2];
+  }else{
+    $_SESSION["name"]    ="";
+    $_SESSION["comment"] ="";
+  }
+}
+if($s==="投稿"){
+  $fp=fopen($fname,"r");
+  while(($row=fgetcsv($fp,1024))!==false){
+    $rows[]=$row;
+  }
+  fclose($fp);
+  foreach($rows as $index=>$val){
+    if($val[0]===$no){
+      $key=$index;
+      break;
+    }
+  }
+  if($key>=0){
+    $row=&$rows[$key];
+  }else{
+    $row=&$rows[];
+  }
+  $row[0]=$no;
+  $row[1]=$name;
+  $row[2]=$comment;
+  unset($row);
+  $fp=fopen($fname,"w");
+  foreach ($rows as $row) {
+    foreach ($row as $key=>$val) {
+      if(!is_numeric($val)){
+        $val=str_replace("\"","\"\"",$val);
+        $val="\"".$val."\"";
+        $row[$key]=$val;
+      }
+    }
+    fwrite($fp,implode(",",$row)."\r\n");
+  }
+  fclose($fp);
+}
+if (!is_null($name) and !is_null($comment) ) {
+  $_SESSION["name"]    =$name;
+  $_SESSION["comment"] =$comment;
+  header('Location: '.$_SERVER["SCRIPT_NAME"]);
+  exit;
+}elseif (!is_null($no)) {
+  $_SESSION["no"]      =$no;
+  header('Location: '.$_SERVER["SCRIPT_NAME"]);
+  exit;
+}else{
+  $name   =isset($_SESSION["name"])?   $_SESSION["name"]   :null;
+  $comment=isset($_SESSION["comment"])?$_SESSION["comment"]:null;
+  $no     =isset($_SESSION["no"])?     $_SESSION["no"]     :null;
+}
+$h_name   =htmlspecialchars($name);
+$h_comment=htmlspecialchars($comment);
+$h_no     =htmlspecialchars($no);
+?>
+<style>
+.required{color:red;}
+</style>
+<form method="post" >
+<input type="text" name="no" value="<?=$h_no;?>" readonly><br>
+お名前<span class="required">【必須】</span>
+<input type="text" name="name" id="name-field" required="required" value="<?=$h_name;?>"><br>
+コメント<span class="required">【必須】</span><br>
+<textarea name="comment" cols="30" rows="3" id="comment" required="required">
+<?=$h_comment;?>
+</textarea>
+<input type="submit" name="s" value="投稿">
+</form>
+<form method="post">
+編集対象番号
+<input type="number" name="no" value="<?=$h_no;?>" min="1" required>
+<input type="submit" name="s" value="編集">
+</form>
+```

chousei

2019/10/04 08:02

投稿

yambejp

スコア114784

test CHANGED Viewed

@@ -217,3 +217,229 @@
 3,piyo,うううう
 ```
+# 下位互換（とりあえず）
+```PHP
+<?php
+session_start();
+$s      =filter_input(INPUT_POST,"s");
+$name   =filter_input(INPUT_POST,"name");
+$comment=filter_input(INPUT_POST,"comment");
+$no     =filter_input(INPUT_POST,"no");
+$fname  ="keijiban.txt";
+if(!file_exists($fname)) die("no file"); // 追記
+if($s==="編集"){
+  $fp=fopen($fname,"r");
+  while(($row=fgetcsv($fp,1024))!==false){
+    $rows[]=$row;
+  }
+  fclose($fp);
+  foreach($rows as $val){
+    if($val[0]===$no) $rec[]=$val;
+  }
+  //$rec=array_filter($rows,function($x) use($no){
+  //  return $x[0]===$no;
+  //});
+  if(count($rec)>0){
+    /* 修正
+    $rec=array_values($rec)[0];
+    */
+    $rec=array_shift($rec);
+    $_SESSION["name"]    =$rec[1];
+    $_SESSION["comment"] =$rec[2];
+  }else{
+    $_SESSION["name"]    ="";
+    $_SESSION["comment"] ="";
+  }
+}
+if($s==="投稿"){
+  $fp=fopen($fname,"r");
+  while(($row=fgetcsv($fp,1024))!==false){
+    $rows[]=$row;
+  }
+  fclose($fp);
+  /* 修正
+  $key=array_keys(array_filter($rows,function($x) use($no){
+    return $x[0]===$no;
+  }))[0];
+  */
+  foreach($rows as $index=>$val){
+    if($val[0]===$no){
+      $key=$index;
+      break;
+    }
+  }
+  //$key=array_shift(array_keys(array_filter($rows,function($x) use($no){
+  //  return $x[0]===$no;
+  //})));
+  if($key>=0){
+    $row=&$rows[$key];
+  }else{
+    $row=&$rows[];
+  }
+  $row[0]=$no;
+  $row[1]=$name;
+  $row[2]=$comment;
+  unset($row);
+  $fp=fopen($fname,"w");
+  foreach ($rows as $row) {
+    fputcsv($fp, $row);
+  }
+  fclose($fp);
+}
+if (!is_null($name) and !is_null($comment) ) {
+  $_SESSION["name"]    =$name;
+  $_SESSION["comment"] =$comment;
+  header('Location: '.$_SERVER["SCRIPT_NAME"]);
+  exit;
+}elseif (!is_null($no)) {
+  $_SESSION["no"]      =$no;
+  header('Location: '.$_SERVER["SCRIPT_NAME"]);
+  exit;
+}else{
+  $name   =isset($_SESSION["name"])?   $_SESSION["name"]   :null;
+  $comment=isset($_SESSION["comment"])?$_SESSION["comment"]:null;
+  $no     =isset($_SESSION["no"])?     $_SESSION["no"]     :null;
+}
+$h_name   =htmlspecialchars($name);
+$h_comment=htmlspecialchars($comment);
+$h_no     =htmlspecialchars($no);
+?>
+<style>
+.required{color:red;}
+</style>
+<form method="post" >
+<input type="text" name="no" value="<?=$h_no;?>" readonly><br>
+お名前<span class="required">【必須】</span>
+<input type="text" name="name" id="name-field" required="required" value="<?=$h_name;?>"><br>
+コメント<span class="required">【必須】</span><br>
+<textarea name="comment" cols="30" rows="3" id="comment" required="required">
+<?=$h_comment;?>
+</textarea>
+<input type="submit" name="s" value="投稿">
+</form>
+<form method="post">
+編集対象番号
+<input type="number" name="no" value="<?=$h_no;?>" min="1" required>
+<input type="submit" name="s" value="編集">
+</form>
+```

ちょうせい

2019/10/04 05:10

投稿

yambejp

スコア114784

test CHANGED Viewed

@@ -16,6 +16,8 @@
 $fname  ="keijiban.txt";
+if(!file_exists($fname)) die("no file"); // 追記
 if($s==="編集"){
   $fp=fopen($fname,"r");

chousei

2019/10/03 10:24

投稿

yambejp

スコア114784

test CHANGED Viewed

@@ -36,8 +36,14 @@
   if(count($rec)>0){
+    /* 修正
     $rec=array_values($rec)[0];
+    */
+    $rec=array_shift($rec);
     $_SESSION["name"]    =$rec[1];
     $_SESSION["comment"] =$rec[2];
@@ -64,12 +70,24 @@
   fclose($fp);
+  /* 修正
   $key=array_keys(array_filter($rows,function($x) use($no){
     return $x[0]===$no;
   }))[0];
+  */
+  $key=array_shift(array_keys(array_filter($rows,function($x) use($no){
+    return $x[0]===$no;
+  })));
   if($key>=0){
     $row=&$rows[$key];