回答編集履歴
2
修正
test
CHANGED
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@@ -142,13 +142,15 @@
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142
142
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$t2=htmlspecialchars($_SESSION["t2"]);
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144
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145
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/*よくみたら再入力の場合エラーは表示されないですね*/
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146
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145
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-
print <<<eof
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print <<<eof
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-
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148
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147
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-
<form method="post">
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149
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<form method="post">
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-
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150
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149
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-
適当な文字：<input type="text" name="t1" value="{$t1}">
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151
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+
適当な文字：<input type="text" name="t1" value="{$t1}"><br>
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-
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-
適当な数値：<input type="text" name="t2" value="{$t2}">
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+
適当な数値：<input type="text" name="t2" value="{$t2}"><br>
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<input type="submit" name="x" value="確認">
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1
sample
test
CHANGED
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@@ -15,3 +15,217 @@
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15
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onloadとクッキーやlocalstorageを組み合わせれば、場合によっては
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読んでくれる可能性はあります
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# 同じページに飛ばしていくサンプル
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```PHP
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session_start();
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$x=filter_input(INPUT_POST,'x',FILTER_DEFAULT,["options"=>["default"=>""]]);
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$t1=filter_input(INPUT_POST,'t1',FILTER_DEFAULT,["options"=>["default"=>""]]);
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$t2=filter_input(INPUT_POST,'t2',FILTER_DEFAULT,["options"=>["default"=>""]]);
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$err=["t1"=>"","t2"=>""];
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if($x==="" and isset($_SESSION["x"])){
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$x=$_SESSION["x"];
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}
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/* 以下、エラーチェック */
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if($x==="確認"){
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if($t1===""){
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$err["t1"]="空だよ";
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$x="エラー再入力";
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}
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if($t2===""){
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$err["t2"]="空だよ";
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$x="エラー再入力";
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}elseif(!is_numeric($t2)){;
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$err["t2"]="数値じゃないよ";
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$x="エラー再入力";
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}
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if($x!=="エラー再入力"){
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$_SESSION["t1"]=$t1;
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$_SESSION["t2"]=$t2;
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}
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}
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/* debug 出力 */
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print "error:";print_r($err);
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print "session:";print_r($_SESSION);
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print "<hr>";
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switch($x){
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default:
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96
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unset($_SESSION["t1"],$_SESSION["t2"],$_SESSION["x"]);
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print <<<eof
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<form method="post">
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適当な文字：<input type="text" name="t1"><br>
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適当な数値：<input type="text" name="t2"><br>
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<input type="submit" name="x" value="確認">
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</form>
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eof;
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break;
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115
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case "エラー再入力":
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unset($_SESSION["t1"],$_SESSION["t2"],$_SESSION["x"]);
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118
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119
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$t1=htmlspecialchars($t1);
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120
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121
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$t2=htmlspecialchars($t2);
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print <<<eof
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125
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<form method="post">
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127
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適当な文字：<input type="text" name="t1" value="{$t1}">{$err["t1"]}<br>
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128
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129
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適当な数値：<input type="text" name="t2" value="{$t2}">{$err["t2"]}<br>
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131
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<input type="submit" name="x" value="確認">
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</form>
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135
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eof;
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136
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break;
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case "再入力":
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140
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141
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$t1=htmlspecialchars($_SESSION["t1"]);
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142
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143
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$t2=htmlspecialchars($_SESSION["t2"]);
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144
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145
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print <<<eof
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146
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147
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<form method="post">
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148
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149
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適当な文字：<input type="text" name="t1" value="{$t1}">{$err["t1"]}<br>
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150
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151
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適当な数値：<input type="text" name="t2" value="{$t2}">{$err["t2"]}<br>
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152
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153
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<input type="submit" name="x" value="確認">
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154
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155
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</form>
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156
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eof;
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break;
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161
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case "確認":
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$t1=htmlspecialchars($t1);
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165
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$t2=htmlspecialchars($t2);
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166
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print <<<eof
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<form method="post">
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t1:{$t1}<br>
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t2:{$t2}<br>
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<hr>
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<input type="submit" name="x" value="再入力">
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<input type="submit" name="x" value="確定">
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</form>
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eof;
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break;
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case "確定":
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/* SQLなど走らせエラーが無ければ登録完了、あれば登録エラーとしてheaderで飛ばす*/
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$_SESSION["x"]="登録完了";
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header("Location:{$_SERVER["SCRIPT_NAME"]}");
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eof;
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break;
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199
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case "登録完了":
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200
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201
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unset($_SESSION["t1"],$_SESSION["t2"],$_SESSION["x"]);
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202
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203
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print<<<eof
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204
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205
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完了しました<br>
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206
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207
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[ <a href="{$_SERVER["SCRIPT_NAME"]}">戻る</a> ]
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208
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eof;
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211
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break;
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212
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case "登録エラー":
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214
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215
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unset($_SESSION["t1"],$_SESSION["t2"],$_SESSION["x"]);
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216
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217
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print<<<eof
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218
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219
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登録に失敗しました<br>
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220
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221
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[ <a href="{$_SERVER["SCRIPT_NAME"]}">戻る</a> ]
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222
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223
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eof;
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224
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225
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break;
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226
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227
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228
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229
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}
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230
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231
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```
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