我已经检查了类似的问题，但我无法找到我的代码的问题，我尝试做的是创建产品，所以我的代码应该做什么是对每个产品进行ajax调用，即使它没有被修改。但有时它会起作用，有时它会抛出错误。
JS
for (var i = 0; i < $('.pds').length; i++) {
var pds_items = $('.pds').length;
var pds_counter = 0;
var pds = $(".pds").eq(i);
var data = new FormData();
$(pds).append( "<input name='position' type='hidden'/>" );
$(pds).append( "<input name='titulo' type='hidden'/>" );
$(pds).append( "<input name='descripcion' type='hidden'/>" );
$(pds).append( "<input name='pds_id' type='hidden'/>" );
data.append("titulo", pds.find("input[name=titulo]").val());
data.append("descripcion", pds.find("input[name=descripcion]").val());
data.append("position", i);
data.append("pds_id", pds.attr("id"));
//alert(pds.attr("id"));
if (pds.find("input[name=pdsimg]").get(0).files.length != 0) {
$(pds).append( "<input name='img_type' type='hidden'/>" );
$(pds).append( "<input name='img_status' type='hidden'/>" );
data.append('img_type', 'pds');
data.append('img_status', "1");
data.append('tmp_img', pds.find("input[name=pdsimg]").prop('files')[0]);
} else {
$(pds).append( "<input name='img_status' type='hidden'/>" );
data.append('img_status', "0");
}
$.ajax({
type: 'POST',
processData: false, // important
contentType: false, // important
data: data,
url: "update_pds.php",
success: function(data) {
pds_counter++;
if (pds_counter == pds_items) {
pds_ready = 1;
allReady();
}
},
error: function(jqXHR, status, error) {
console.log(jqXHR);
console.log(status);
console.log(error);
//alert("Hubo un problema");
//location.reload();
//console.log("Error al actualizar");
}
});
}
PHP
<?php
$conn = mysqli_connect('localhost', 'balaboxc_javier', '*****', 'balaboxc_xauty');
session_start();
if ( isset($_SESSION['XautySV'])!="" ) {
$user_id = $_SESSION['XautySV'];
}
$titulo = $_POST["titulo"];
$descripcion = $_POST["descripcion"];
$pds_id = $_POST["pds_id"];
$titulo = mysqli_real_escape_string($conn,$titulo);
$descripcion = mysqli_real_escape_string($conn,$descripcion);
$position = $_POST["position"];
$img_type = $_POST["img_type"];
$img_status = $_POST["img_status"];
$filetmp = $_FILES["tmp_img"]["tmp_name"];
$filename = $_FILES["tmp_img"]["name"];
$filename = mysqli_real_escape_string($conn,$filename);
$filetype = $_FILES["tmp_img"]["type"];
$filepath = "bgs/".$filename;
$filepath = preg_replace('/\s+/', '-', $filepath);
if ($titulo == "" && $descripcion == "" && $filename == "") {
// El producto está vacío, por lo tanto no se hace nada
$check = mysqli_query($conn, "SELECT * FROM `pds_svs` WHERE `user_id` = '$user_id' AND `id` = '$pds_id'") or exit(mysqli_error());
if(mysqli_num_rows($check)){
//$sql = "UPDATE pds_svs SET title=' ', description=' ' WHERE position='$position' AND user_id='$user_id';"
$sql = "DELETE FROM pds_svs WHERE user_id = '$user_id' AND id = '$pds_id';";
$conn->multi_query($sql);
//mysqli_query($con,"DELETE FROM `pds_svs` WHERE `user_id` = '$user_id' AND `position` = '$position'");
}
echo "1";
} else {
$check = mysqli_query($conn, "SELECT * FROM `pds_svs` WHERE `user_id` = '$user_id' AND `id` = '$pds_id'") or exit(mysqli_error());
if(mysqli_num_rows($check)){
//Subir a base de datos
$sql = "UPDATE pds_svs SET title='$titulo', description='$descripcion' WHERE id='$pds_id' AND user_id='$user_id';";
if ($conn->multi_query($sql) === TRUE) {
if ($img_status == 1) {
if (move_uploaded_file($filetmp,$filepath)) {
//Subir a base de datos
$sql = "UPDATE pds_svs SET img_url='$filepath' WHERE user_id='$user_id' AND id='$pds_id';";
if ($conn->multi_query($sql) === TRUE) {
echo "1";
} else {
echo "0";
}
//Fin Subir a base de datos
}
}
//echo "1";
} else {
echo "0";
}
//Subir a base de datos
} else {
$result = mysqli_query($conn, "SELECT MAX(position) FROM pds_svs WHERE user_id = '$user_id'");
$row = mysqli_fetch_row($result);
if ($position != 0) {
$position = $row[0];
$position++;
}
//Subir a base de datos
$sql = "INSERT INTO pds_svs (user_id, title, description, position) VALUES ('$user_id', '$titulo', '$descripcion', '$position');";
if ($conn->multi_query($sql) === TRUE) {
if ($img_status == 1) {
if (move_uploaded_file($filetmp,$filepath)) {
//Subir a base de datos
$sql = "UPDATE pds_svs SET img_url='$filepath' WHERE user_id='$user_id' AND position='$position';";
if ($conn->multi_query($sql) === TRUE) {
echo "1";
} else {
echo "0";
}
//Fin Subir a base de datos
}
}
//echo "1";
} else {
echo "0";
}
//Fin Subir a base de datos
}
} // Esta llave cierra la sentencia que evalua si el producto tiene información o no
?>