ArtsAutosBooksBusinessEducationEntertainmentFamilyFashionFoodGamesGenderHealthHolidaysHomeHubPagesPersonal FinancePetsPoliticsReligionSportsTechnologyTravel
  • »
  • Technology»
  • Computers & Software

5 most common PHP mistakes

Updated on March 20, 2012

PHP is a very unique and effective web language that has been around for a number of years. The problem of writing effective PHP for websites has been around just as long. As with any language this includes computer language there are a variable amount of common mistakes that people need to practice not to do.

Quotes Placement

One of the most common mistakes, me included, is where to put the correct quotes. For example this code snippet

<?php

echo "Hello there.'; // starts with a double-quote, ends with a single-quote.

?>

This particular PHP problem for beginners is tough, because, the PHP is looking for the specific ending double quote. So identifying where to open and close your quotes is the biggest issue with PHP.

Dollar Sign Placement

There are other common mistakes besides the missing quotes in a snippet of code. There are missing dollar signs, incorrect placement of Equal signs, and even misspelled variable names. One basic component for the missing variable is below.

<?php

$name = "Mike";

echo $Name;

?>

Notice in the snippet above is $name and it is not the same as the $Name so in this example nothing is displayed.

Incorrect Equal Sign Usage

Another example that you may run into is the use of equal signs while using PHP here is an example below

<?php $number = 23; ?>

The value presented is equal to the value of 23

You want to remember as a beginner to draw on a comparison if “IF” in that case you would use it comparable to double equal signs like here below.

<?php

if(23==23){

echo"23 is in fact equal to 23.";

}

?>

Missing Ends

Missing the ends in PHP script is probably as common as using the quotes ending. Ends are the curly brackets with a slight indent in the middle. The easiest and most reliable method to use in preventing this type of error while writing PHP is to indent your code with spaces or tabs here is a small code example below.

$number = 123;

$name = "Mike";

if ($number == 123)

{

if ($name == "Mike")

{

echo "Hi $name!";

}

$number + $number = $newNumber;

echo $newNumber;

}

Of course last but not least to PHP beginner mistakes is spelling. When spelling in PHP code it is the best choice to either stick with capitols or with lower case letters never mix both it can be confusing. So, until you get the hang of it always spell using the same type case letters and it will make a smoother transition.

These examples are not to discourage the use of PHP based website design, but, are to help you become aware of some of the more common mistakes that can arise in the beginning. The best thing with any language problems is to practice, practice, and practice. There are a variety of software tools and tutorial to help you identify common mistakes. I found several of them very useful in finding my most common issue with quotes. Try it I’m sure you will agree.

Comments

Submit a Comment

  • phdast7 profile image

    Theresa Ast 6 years ago from Atlanta, Georgia

    Kadmiels- I am sure this is great, but it is so far over my head and I don't understand it. But I am forwarding it to my son who speaks the same language I believe. :)

working

This website uses cookies

As a user in the EEA, your approval is needed on a few things. To provide a better website experience, hubpages.com uses cookies (and other similar technologies) and may collect, process, and share personal data. Please choose which areas of our service you consent to our doing so.

For more information on managing or withdrawing consents and how we handle data, visit our Privacy Policy at: "https://hubpages.com/privacy-policy#gdpr"

Show Details
Necessary
HubPages Device IDThis is used to identify particular browsers or devices when the access the service, and is used for security reasons.
LoginThis is necessary to sign in to the HubPages Service.
Google RecaptchaThis is used to prevent bots and spam. (Privacy Policy)
AkismetThis is used to detect comment spam. (Privacy Policy)
HubPages Google AnalyticsThis is used to provide data on traffic to our website, all personally identifyable data is anonymized. (Privacy Policy)
HubPages Traffic PixelThis is used to collect data on traffic to articles and other pages on our site. Unless you are signed in to a HubPages account, all personally identifiable information is anonymized.
Amazon Web ServicesThis is a cloud services platform that we used to host our service. (Privacy Policy)
CloudflareThis is a cloud CDN service that we use to efficiently deliver files required for our service to operate such as javascript, cascading style sheets, images, and videos. (Privacy Policy)
Google Hosted LibrariesJavascript software libraries such as jQuery are loaded at endpoints on the googleapis.com or gstatic.com domains, for performance and efficiency reasons. (Privacy Policy)
Features
Google Custom SearchThis is feature allows you to search the site. (Privacy Policy)
Google MapsSome articles have Google Maps embedded in them. (Privacy Policy)
Google ChartsThis is used to display charts and graphs on articles and the author center. (Privacy Policy)
Google AdSense Host APIThis service allows you to sign up for or associate a Google AdSense account with HubPages, so that you can earn money from ads on your articles. No data is shared unless you engage with this feature. (Privacy Policy)
Google YouTubeSome articles have YouTube videos embedded in them. (Privacy Policy)
VimeoSome articles have Vimeo videos embedded in them. (Privacy Policy)
PaypalThis is used for a registered author who enrolls in the HubPages Earnings program and requests to be paid via PayPal. No data is shared with Paypal unless you engage with this feature. (Privacy Policy)
Facebook LoginYou can use this to streamline signing up for, or signing in to your Hubpages account. No data is shared with Facebook unless you engage with this feature. (Privacy Policy)
MavenThis supports the Maven widget and search functionality. (Privacy Policy)
Marketing
Google AdSenseThis is an ad network. (Privacy Policy)
Google DoubleClickGoogle provides ad serving technology and runs an ad network. (Privacy Policy)
Index ExchangeThis is an ad network. (Privacy Policy)
SovrnThis is an ad network. (Privacy Policy)
Facebook AdsThis is an ad network. (Privacy Policy)
Amazon Unified Ad MarketplaceThis is an ad network. (Privacy Policy)
AppNexusThis is an ad network. (Privacy Policy)
OpenxThis is an ad network. (Privacy Policy)
Rubicon ProjectThis is an ad network. (Privacy Policy)
TripleLiftThis is an ad network. (Privacy Policy)
Say MediaWe partner with Say Media to deliver ad campaigns on our sites. (Privacy Policy)
Remarketing PixelsWe may use remarketing pixels from advertising networks such as Google AdWords, Bing Ads, and Facebook in order to advertise the HubPages Service to people that have visited our sites.
Conversion Tracking PixelsWe may use conversion tracking pixels from advertising networks such as Google AdWords, Bing Ads, and Facebook in order to identify when an advertisement has successfully resulted in the desired action, such as signing up for the HubPages Service or publishing an article on the HubPages Service.
Statistics
Author Google AnalyticsThis is used to provide traffic data and reports to the authors of articles on the HubPages Service. (Privacy Policy)
ComscoreComScore is a media measurement and analytics company providing marketing data and analytics to enterprises, media and advertising agencies, and publishers. Non-consent will result in ComScore only processing obfuscated personal data. (Privacy Policy)
Amazon Tracking PixelSome articles display amazon products as part of the Amazon Affiliate program, this pixel provides traffic statistics for those products (Privacy Policy)