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How to know how many memories each variable in the PHP violination is

Bogopo last edited by

There was a need to know how much it takes. ОЗУ every variable in the PHP violin. There are ways, except writing a million times. memory_get_usage()?
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rielyn

function sizeofvar($var) {
    $start_memory = memory_get_usage();
    $tmp = unserialize(serialize($var));
    return memory_get_usage() - $start_memory;
}

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PHP code is not recognized in the page
Software Programming • php ajax web application • • carriann

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Always <?php at the beginning of a code PHP and end with ?>.For example, in the code you posted above the function that is called getMessage() is not among PHP tags. You always have to check. Avoid using only <? to start the PHP code. Some apaches are not configured to use short_tags.Also check the file extension, if it is really .php . Last point to check is whether the apache you are running is an apache or is the IIS (windows). Always try to use apaches like Xampp, Wamp, Vertrigo, etc.
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Error: Uncaught SyntaxError: Invalid or unexpected token
Software Programming • php php7 • • courtlanda

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To be able to print HTML multi-line it is necessary to use ` backtick within the function getComentarios()That's why when you make a small string or it doesn't have characters HTML That's why you're not mistaken.Therefore your code would remain like this:<?php $gasto = "$75 de llaves<br /> $20 motores<br /> $200 mano de obra"; $enlace = '<a href="javascript:void(0)" onClick="getComentarios(' . $gasto . ')">' . $gasto . '</a>'; print $enlace; ?>
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PHP zip creates an empty archive
Software Programming • php zip • • Cleofas

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That's a 100% way to work. If you don't sign up anyway, check:Rights to record in the final catalogue and read the reference.Whether the expansion of the PHP is connected (this is not the case, because you still have the archive, but someone might have a problem with it).Whether the names of files and catalogues are correctly indicated.<?php $tempFolder = '/home/user/'; $archiveName = 'archive.zip'; $filePath = '/home/user/1.txt'; $zip = new ZipArchive(); $archive = $tempFolder . $archiveName; if (!file_exists($archive)) { file_put_contents($archive, null); } if ($zip->open($archive, ZipArchive::CREATE) !== true) { exit ('Error open'); } if (!$zip->addFile($filePath, basename($filePath))) { exit ('Error adding'); } $zip->close();
Undefined variable in PHP
Software Programming • php phpmyadmin • • Marcee

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You're facing a problem. scope of PHP functions/variables.The variable you want to use is here:function subirImagen() { $nombre_img="..."; //código } You can't use it out there.Unless you twist it from within the function.In that case, you'd have to put a return At the end:function subirImagen() { $nombre_img="..."; //código /*Esta debe ser la última línea*/ return $nombre_img; } And, in the code part where you want to use the variable, outside its scope You write this:$nombre_img=subirImagen(); //Aquí tomará el valor del return $db->insertar(....); This would be practical only if the only thing you're interested in using outside subirImagen() It's the name of that variable. If you need other variables you should return an array with each one of them, or, better, design the code based on one Clase to use their properties and methods more easily and have the most organized code.Some testsLet's look at some evidence of what's above. You can check the full code in this http://rextester.com/MXI15128 .Test 1: how you have the code nowIt doesn't work because you're trying to use the variable outside your field./* *Prueba 1: - No funcionará porque se usa la variable fuera de su ámbito */ function subirImagenSinReturn() { $nombre_img="imagen.jpg"; $size_img="100kb"; } subirImagenSinReturn(); echo $nombre_img; Departure:PHP Notice: Undefined variable: name_img in source_file.php on line 14Test 2: Returning the variable from its scope/* *Prueba 2: - Se trae la variable llamando a la función, mediante el return - Recomendable en algunos casos, y si sólo interesa un dato de la función */ function subirImagenConReturn() { $nombre_img="imagen.jpg"; $size_img="100kb"; return $nombre_img; } $nombre_img=subirImagenConReturn(); echo $nombre_img.PHP_EOL; Departure:imagen.jpg Test 3: obtaining multiple data using an array/* *Prueba 3: - Se traen varias variables en un array mediante el return - Poco recomendable, porque luego habría que buscar cada variable dentro de array. - En vez de esto convendría quizá pensar en una clase (ver Prueba 4) */ function subirImagenConReturnMultiple() { $nombre_img="imagen.jpg"; $size_img="100kb"; return array("nombre"=>$nombre_img, "size"=>$size_img); } $arrDatos=subirImagenConReturnMultiple(); $nombre_img=$arrDatos["nombre"]; $size_img=$arrDatos["size"]; echo $nombre_img.PHP_EOL; echo $size_img.PHP_EOL; Departure:imagen.jpg 100kb Test 4: Using a classHere we enter another area, but very interesting: Object-oriented Programming (POO). It is a modern programming paradigm that will be of great use in the future./* *Prueba 4: - Mediante una Clase - Se declaran las variables como miembros de la clase. - Se puede acceder a ellas desde cualquier parte de la clase - Antes de optar por esta solución convendría informarse sobre qué son la Clases qué es la Programación Orientada a Objetos, etc. Para no crear clases de forma indiscriminada La programación con clases es una potente herramienta para resolver problemas complejos, mantener el código organizado, evitar la repetición de código, etc. Algo esencial, sobre toco cuando se empieza, es pensar la clase como una entidad única no como entidades separadas. Así, podemos hablar de la clase Persona, la clase Imagen, etc las cuales tendrían todos los atributos de esa entidad como nombre, tamaño, color... */ class Imagen { private $nombre_img; private $size_img; public function __construct(){ } public function subirImagen(){ //Código relativo a la subida de imágenes $this->nombre_img="imagen.jpg"; $this->size_img="100kb"; } public function insertarImagen(){ $this->subirImagen(); echo $this->nombre_img.PHP_EOL; echo $this->size_img.PHP_EOL; } } /* -Modo de uso de la clase: Creas una instancia de la clase y tienes acceso a sus miembros usando la instancia */ $myImagen=new Imagen(); $myImagen->insertarImagen(); Departure:imagen.jpg 100kb
I want to learn hacking but unable to connect to internet
Security, Penetration Testing • php wifi • • inna

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First of all, remember that in most countries (if not all) accessing protected Wi-Fi networks without authorization is illegal. There are techniques you can use to do this, but I'm not going to describe them because it seems that you might use them to break the law, even if not knowingly. Learning ethical hacking is great, but you need to keep it ethical and legal. Anyway, there are a lot of things you could do to access the Internet. For example, you could go to an internet cafè, or use a mobile data connection such as 3G from the computer (look up "tethering"). Of course, you might want to keep your expenses at a minimum. Note that you don't necessarily need to always use an Internet connection. A lot can be learned by installing software like VMware or VirtualBox, and set up a couple of virtual machines. Basically, a virtual machine is a full-blown operating system which you can create inside the so-called "host system", in your case Windows 7. There are a lot of intentionally vulnerable virtual machines, that are designed to teach security concepts. If I were you, I would somehow obtain an Internet connection (I mean legally) and download VirtualBox, a couple of vulnerable machines, and a few tutorials( How to set up virtual machine networks, what is a SQL injection, ...) on a flash drive, go home and install all this stuff on your computer. After reading something you can start learning in a hands-on way! By the way, you can use your knowledge of PHP and SQL in order to learn about the following vulnerabilities: SQL injection, remote and local file inclusion, directory traversal. These are basic flaws one can find (unfortunately) in many real world systems, so they are very important. I also strongly suggest you to learn how to use Linux (install a Kali Linux VM as an attacking platform) and to learn at least a bit of Javascript. This way, you will also be able to exploit other vulnerabilities, such as cross-site scripting and CSRF.
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vk api, php, sdk
Software Programming • php api contact sdk • • elysha

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If the first echo is out and the second one isn't, then there's a mistake somewhere. Maybe you're out of error. Try writing at the beginning of the file. error_reporting(E_ALL)♪ If it didn't work, try finding mistakes in the file. /var/log/apache2/error.log (for *unix)
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Check of the php variable
Software Programming • php • • gionna

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I'd rather do that: $age = 'ghjjdyuj'; if(!empty($age) && is_numeric($age)) { if($age <= 18) { echo 'Вы еще молоды!'; } else if($age >= 55) { echo 'Вы уже пенсионер!'; } else { echo 'Вы еще в самом соку!'; } } else { echo 'Ошибка! Не возможно определить Ваш возраст'; }
No php post variables with brackets: []
Software Programming • php post • • Bogopo

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<form action="" name="someForm"> <input type="text" name="someForm[testInput]"> <?php echo $_POST['someForm']['testInput'] ?> Have you tried that?
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Bug with "Y"
Software Programming • php • • jules

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Normalization can be applied:$i1 = "\xd0\xb9"; // й $i2 = "\xd0\xb8\xcc\x86"; // и с дужкой echo $i1, ' ', strlen($i1), ' ', mb_strlen($i1), ' ', mb_strlen(Normalizer::normalize($i1, Normalizer::NFC)), "\n"; echo $i2, ' ', strlen($i2), ' ', mb_strlen($i2), ' ', mb_strlen(Normalizer::normalize($i2, Normalizer::NFC)), "\n"; y 2 1y 4 2 1After normalization, the composite version of the y becomes simple. https://3v4l.org/WefQB
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variable step boton php
Software Programming • php formularies entry • • chanisef

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In the <input> the id is used in html and css, the parameter that travels to the server when you submit is what is in the attribute value.In the way you're sending the data, you need to add a second <input> with the log id to remove, so you don't see it you can do type="hidden".On the other hand, on the form you are using method = "POST"So to read the parameters you have to use $_POST[], $_GET[] It's gonna be empty.<form action="componentes/misAnuncios/borrarAnuncio.php" method="post"> <input type="hidden" id="<?php echo "'" . $row['titulo'] . "'"; ?> " name="titulo" value="<?php echo "'" . $row['titulo'] . "'"; ?> "/> <input type="submit" id="submit" name="borrar_anuncio" value="Eliminar anuncio"> </form> And in the file componentes/misAnuncios/borrarAnuncio.php:$titulo_borrar = $_POST['titulo']; Additionally the field titulo is not a good candidate to use as id in html. Usually the titles of the publications have spaces and in html5 the ids should not have spaces. My suggestion is that instead of the title field you use a unique id that depending on your data model may be or the primary key to the table (if it is armed in this form) or a field that you can add as unique and not null. And then weapons you go like publicacion_<n>Where <n> is the value of that field. Examples: publicacion_1, publicacion_2etc.
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Pass variable ajax to php and how to make the call in php
Software Programming • php java ajax • • amarantha

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You've got a bug in the mess, try with:$.post( "envio.php", {resultado:resultado}); and in shipping.php you should be able to read it with:$resultado = $_POST["resultado"]
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as putting spoiler to reveal itself ask for a key
Software Programming • javascript php html5 cs3 • • Anderson

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First of all I would say to do it with JQuery because it is much simpler to run and create the code. But as I don't know if you're used to Jquery I've done it on javascript and JQuery.InformationOn my example page I will save the keys in an array of javascript. Although my recommendation is to use AJAX, PHP and MySQL to save keys and information. So we'll have a variable like that. var claves=["pepito"]JavascriptFor this example I will have this html<div onclick="esconder_ocultar(this)" spoiler_att="0">df</div> <div class="spoiler_elem">asdfasd</div> With this javascript:function esconder_ocultar(elem){ var clave_id=elem.getAttribute("spoiler_att"); var clave=prompt("Introduce la contraseña"); if(claves[clave_id]==clave){ alert("Contraseña aceptada"); elem.parentElement.querySelectorAll("[spoiler_att]+.spoiler_elem")[0].style.display="block"; }else{ alert("Contraseña incorrecta"); elem.parentElement.querySelectorAll("[spoiler_att]+.spoiler_elem")[0].style.display="none"; } } This will work in such a way that it will call the variable claves And then I'll take the attribute spoiler_att which will indicate in which the key is indexed.Then execute a prompt() which will make you throw out a window where you will have to enter the password.Then check if the value of the key and the input are equal.JqueryNOTE: Because I insist on Jquery is because it is much easier to use as it does not require a onclick or excessive code linesHaving this html:<div spoiler_att="0">df</div> <div class="spoiler_elem">asdfasd</div> With this javascript$(document).ready(function(){ var claves=["pepito"]; $("[spoiler_att]").click(function(){ var clave=prompt("Introduce la contraseña"); var clave_id=$(this).attr("spoiler_att"); if(claves[clave_id]==clave){ alert("contraseña aceptada"); $(this).parent().find("[sspoiler_attr]+.spoiler_elem").show(); }else{ alert("Clave incorrecta"); $(this).parent().find("[sspoiler_attr]+.spoiler_elem").hide(); } }); }); RECOMMENDATIONSMy recommendation as I said before is to use AJAX, PHP and MYSQL since if you do this type of code to a little you know of html or the developer tool of each browser (right click - censor) You could skip your password.. So I recommend having a MYSQL table with all the data: The key and the text (it wouldn't matter if you save it with the html labels as the Jquery is quite simple to add items)
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Why don't you give me the memory of the variables in the glass?
Software Programming • c++ glass • • kalyn

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Local variables are located in the glass to be local not only for the function but also for each literation of its challenge. When a function starts to be arrogant, it should receive a new memory block under local variables, and the first one should return it. And the only thing in the processor is distinguishing these two eczempolar functions is a reference point.If you have local variables store aggregated a large amount of data (from hundreds of kilobite and above), it makes sense to place the area in a pile and keep the index on it in the glass.Why such a default mechanism is not applied because it is slower and 99% of cases are not necessary.
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I don't know how to php
Software Programming • php html phpmailer • • Trenton

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Set the code:$mail->charSet = 'UTF-8';
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How do you ask for mySQL for a few defined values?
Software Programming • php mysql • • magpie

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select ip_id from vote_ip where (mes_id_fk BETWEEN 1 AND 10) and ip_add='$ip' orselect ip_id from vote_ip where mes_id_fk < 10 and ip_add='$ip'

How to know how many memories each variable in the PHP violination is

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