Use Is_String to Check if a Variable Is a String in PHP

The is_string() PHP function is used to check if a type of variable is a  string. A string is a data type, such as floating point or integer, but it represents text rather than numbers. A string uses a set of characters that includes spaces and numbers. For instance, an address such as 1234 Broadway and the sentence I ate 3 hotdogs contain numbers that should be treated as text, not as numbers. How to Use the Function Is_string is used within an if () statement to treat strings in one way and non-strings in another. It returns true or false. For example: ?php if (is_string(23)) {echo Yes;} else {echo No;}? The code above should output No because 23 is not a string. Lets try this again: ?php if (is_string(Hello World)) {echo Yes;} else {echo No;}? Since Hello World is a string, this would echo Yes. Specifying a String A string can be specified in four ways: Single quotedDouble quoted  Heredoc syntaxNowdoc Syntax Each of these methods requires strict adherence  to PHP rules, which are available at the PHP website. The simplest method, single-quoted strings, requires special treatment when literal single quotation marks or literal backslashes appear in the string. Include a backslash in front of the single quotation mark or backslash within the string. The example below illustrates this treatment: ?php//  Outputs:  Arnold said:  Ill  be  backecho  Arnold said:  I\ll  be  back;//  Outputs:  I  deleted  C:\*.*?echo  I  deleted  C:\\*.*?;? Similar Functions is_float() – determines if the type of variable is floatis_int() – determines if the type of variable is integeris_bool() – determines if a variable is a booleanis_object() – determines if a variable is an objectis_array() – determines if a variable is an arrayis_numeric() – determines if a value is a number or a numeric string

Thematic Essay The Veldt - 1165 Words

Thematic Essay Draft Imagine you re in a silent dead house The only noise you hear is yourself breathing. You hear yourself breathing in and out as you walk around with everything off. You turned everything off and it feels like there s dead body everywhere. Your kids are begging you to turn everything back on not wanting to leave the nursery. This is what happens in the book â€Å"The Veldt† by Ray Bradbury is about the family and their kids have this room that is called the nursery. In the nursery the point is to travel where ever you want but you stay in the house you just see what is looks like. Their kids Wendy and Peter don t use it for that reason. They only go to one place and one place only and that is Africa. One thing that happens in this book is that the kids are too obsessed with technology like the nursery which is to learn about other places and what they they look like and what it feels like, but that’s not what they do and things are getting out of control with them always visiting Africa. The children are becoming too obsessed with the technology and its affecting their learning on other places. They aren’t using the nursery for the things that they need to learn about. They are just using it for their entertainment and not for learning basing. Although some say that it is more out of hate then technology that is why they are changing is because they are hating their parents because they won t let them do what they want to do. Like how their dad wouldn’t

Electrocardiogram Essay Example For Students

Electrocardiogram Essay Electrocardiogram LabIntroductionElectrocardiograms are used to obtain information about the function of the heart. An ECG is a recording of the electrical activity of the heart made from electrodes placed on the surface of the skin. Salt solutions are good conductors of electricity and can transfer electrical activity to the skins surface. An ECG tracing shows the sum of the electrical potentials generated by all the cells of the heart at any moment (Silverthorn, 1998). Each point reflects depolarization or repolarization of a portion of the heart. Depolarization is the signal for contraction. There are three major components of an ECG: the p waves, which corresponds to depolarization of the atria (Silverthorn, 1998). The qrs complex represents the progressive wave of ventricular depolarization (Silverthorn, 1998). And the t wave, represents the repolarization of the ventricles. When recording an ECG, one active surface electrode is the positive and the other electrode is negative w hile the third electrode is inactive. These electrodes are known as leads. Twelve leads are now used to record ECG: the three limb electrodes plus the nine more electrodes placed on the chest and trunk. ECGS recorded from the different lead look different and give information about different regions of the heart (Purves, 1998). An ECG provides information on heart rate and rhythm, conduction velocity, and even the condition of the tissues within the heart. Although obtaining and ECG is simple, interpreting some of its subtleties can be quite complicated. PurposeTo understand the electrical and mechanical events accociated with an ECG tracing (DiFiori and Jarrell, 1998). To record and interpret ECG tracings under a variety of physiological situations (DiFiori and Jarrell, 1998). To determine how changes in an ECG can lead to changes in the heart rate (DiFiori and Jarrell, 1998). 1). What is the effect of the heart rate on a person who is sitting as opposed to exercising?Hypothesisthe heart rate is faster in a person who is exercising. 2) What is the effect of the heart rate on a person who is sitting as opposed to a person demonstrating biofeedback?Hypothesisthe heart rate could be the same if the individual is not totally relaxed, but if the person goes to his or her special place thats very relaxing for them, the heart while performing biofeedback could be lower than a person sitting down. MethodsSet up an individual to record a normal ECG by placing a white electrode on the wrist, a black electrode on the right ankle, and a red electrode on the lateral malleolus. Plug the electrodes into port number two and choose lesson five and press setup. The biopac unit will check the leads and adjust the recording on the screen. When your patient is still, press the record button and the biopac unit will record for 60 seconds. If a problem occurs, press the redo button and record again. After the setup is complete, take the heart rate of the patient before each activity. The activities include sitting, lying down, biofeedback, autonomic response, and response to exercise. During each activity, record a ECG and make a record of the intervals and amplitudes. ResultsAccording to the t-test that compares the heart rate of the sitting and exercise intervals, the person sitting has a lower heart rate than the person exercising. The graph also, support the hypothesis. Also, in the chart and graph that compares the heart rate of a person sitting and performing biofeedback, it shows that a person sitting have a higher heart rate than a person performing biofeedback. DiscussionDuring the early p-q intervals of an ecg, the atria and ventricles are relaxed while the ventricles are passively being filled with blood. At the latter end of the p-q interval, atrial contraction occurs forcing additional blood into the ventricles. At the beginning of the qrs interval on an ecg reading, the mitral valve closes and the ventricles are at edv (135ml). During the qrs interval, ventricular contraction occurs increasing the pressure in the ventricle and the aorta. When the pressure continues in the ventricle exceeds the pressure in the arteries, the aortic valve opens and blood is ejected. The increased pressure continues through the t peak. The ventricles are now in esv (65ml) and the aortic valve is closed. Now the ventricles are relaxed causing pressure to fall and the cardiac cycle starts over again. This ecg reading was from a normal tracing. Keep in mind that an ecg is easy to obtain, but there are some subtleties that are very complex. .u92acfc74909506fb1112efbd5206267b , .u92acfc74909506fb1112efbd5206267b .postImageUrl , .u92acfc74909506fb1112efbd5206267b .centered-text-area { min-height: 80px; position: relative; } .u92acfc74909506fb1112efbd5206267b , .u92acfc74909506fb1112efbd5206267b:hover , .u92acfc74909506fb1112efbd5206267b:visited , .u92acfc74909506fb1112efbd5206267b:active { border:0!important; } .u92acfc74909506fb1112efbd5206267b .clearfix:after { content: ""; display: table; clear: both; } .u92acfc74909506fb1112efbd5206267b { display: block; transition: background-color 250ms; webkit-transition: background-color 250ms; width: 100%; opacity: 1; transition: opacity 250ms; webkit-transition: opacity 250ms; background-color: #95A5A6; } .u92acfc74909506fb1112efbd5206267b:active , .u92acfc74909506fb1112efbd5206267b:hover { opacity: 1; transition: opacity 250ms; webkit-transition: opacity 250ms; background-color: #2C3E50; } .u92acfc74909506fb1112efbd5206267b .centered-text-area { width: 100%; position: relative ; } .u92acfc74909506fb1112efbd5206267b .ctaText { border-bottom: 0 solid #fff; color: #2980B9; font-size: 16px; font-weight: bold; margin: 0; padding: 0; text-decoration: underline; } .u92acfc74909506fb1112efbd5206267b .postTitle { color: #FFFFFF; font-size: 16px; font-weight: 600; margin: 0; padding: 0; width: 100%; } .u92acfc74909506fb1112efbd5206267b .ctaButton { background-color: #7F8C8D!important; color: #2980B9; border: none; border-radius: 3px; box-shadow: none; font-size: 14px; font-weight: bold; line-height: 26px; moz-border-radius: 3px; text-align: center; text-decoration: none; text-shadow: none; width: 80px; min-height: 80px; background: url(https://artscolumbia.org/wp-content/plugins/intelly-related-posts/assets/images/simple-arrow.png)no-repeat; position: absolute; right: 0; top: 0; } .u92acfc74909506fb1112efbd5206267b:hover .ctaButton { background-color: #34495E!important; } .u92acfc74909506fb1112efbd5206267b .centered-text { display: table; height: 80px; padding-left : 18px; top: 0; } .u92acfc74909506fb1112efbd5206267b .u92acfc74909506fb1112efbd5206267b-content { display: table-cell; margin: 0; padding: 0; padding-right: 108px; position: relative; vertical-align: middle; width: 100%; } .u92acfc74909506fb1112efbd5206267b:after { content: ""; display: block; clear: both; } READ: Industrial Revolution Essay SummaryBibliographyLITERATURE CITEDSilverthorn, D.U.1998. Human Physiology: An Integrated Approach. Prentice Hall Press. NJ, USA. DiFiori, R.E. and P.E. Jarrell. 1998. Physiology Laboratory Book. Kendall/Hunt Publishing Company. IA, USA. Purves, W.K. 1998. Life: The Science of Biology. Sinauer Associates, INC. MA, USA. Health and Beauty Essays

Taking Responsibility Essay Example For Students

Taking Responsibility Essay 1999 must be a great year to be alive if you are a criminal! Nobody takes responsibility for his or her own actions anymore. Someone commits a heinous crime, and anything but the criminal gets blamed. It was a harsh childhood, abusive parents, violent movies and video games, the availability of guns and bomb making materials, the Internet, pornography, peer pressure, etc. In my mind, if you commit a crime, then you are a criminal. I am the only one that makes the decisions I make in life. Others may influence my decisions, but ultimately, I am the one that makes that final choice. We will write a custom essay on Taking Responsibility specifically for you for only $16.38 $13.9/page Order now No matter how hard and pathetic you think your life is, or how badly society treats you, or what you watch on TV, or what you can buy from the store or read on the Internet, you made the decision to break the law-nobody made the decision for you. Oliver Stone didnt tell you to watch Natural Born Killers and then go mimic the crimes. The NRA did not make you illegally purchase guns. The Internet did not force you to download recipes for bombs. The massacre at Columbine High School was a tragedy. Instead of looking at these kids that committed the crime and utting blame where it belongs, everyone was more than willing to point a quick finger of blame so they could feel better somehow. Unfortunately, some have used this tragedy as nothing more than an event to be exploited for their own political gains. People that are afraid of the Internet were quick to point out that Nazi and hate propaganda and bomb-making recipes are easily accessed on the Internet, and that alternative ideas seem to flourish on the Internet. Immediately everyone wants to censor the hell out of the Internet and keep their kids away from it. They fail to mention he business and education values of the Internet, and dwell on the negative. Antigun people quickly forget about the 60+ bombs that were found and focused merely on the fact that firearms were used by these psychos. They immediately want more gun laws and bans (but fail to mention that dozens of existing gun laws were broken by these boys as it is, and that the laws now being proposed in the aftermath would not have prevented this sort of thing). Others quickly point out that these kids played violent arcade games and watched violent moviesban these things as well. People that dont like or understand new music blame Marilyn Manson and other alternative and/or metal bands. Am I the only one that is saying, These kids were psychos that should have been stopped before it got this far? These kids already had criminal records. They wore Nazi paraphernalia to school, they threatened other kids. They had Web pages detailing their bombs and various hate messages. They managed to amass bomb-making materials right in their homes. They got older friends to buy guns for them, et cetera. Did nobody notice this? Where were the parents when these kids were building BOMBS right in the garage? Am I the only one saying, I use the Internet. I watch violent movies. I play video games. Ive listened to heavy metal music. I have been ridiculed by classmates, but Ive never even thought about killing anybody! I have seen Natural Born Killers. I have played Doom. Ive listened to black metal. I own several swords used in martial arts practice. I use the Internet everyday. As far as the finger-pointing crowd goes, I must seem like the most dangerous person in America. And yet I havent committed a school massacre. I have never wanted to, nor will I ever. And yet all these things are somehow to blame for these kids going nuts and attacking their fellow classmates at school. Can we stop the finger-pointing for just a second to realize these two kids, and these two kids alone (unless it is proven there were other conspirators involved), made the decision to go into that school and set off bombs and shoot at minorities and jocks? I take full responsibility for my actions, and I naà ¯vely expect others to do the same. .u5b38991ec0f86a2c0c79b2c8041711eb , .u5b38991ec0f86a2c0c79b2c8041711eb .postImageUrl , .u5b38991ec0f86a2c0c79b2c8041711eb .centered-text-area { min-height: 80px; position: relative; } .u5b38991ec0f86a2c0c79b2c8041711eb , .u5b38991ec0f86a2c0c79b2c8041711eb:hover , .u5b38991ec0f86a2c0c79b2c8041711eb:visited , .u5b38991ec0f86a2c0c79b2c8041711eb:active { border:0!important; } .u5b38991ec0f86a2c0c79b2c8041711eb .clearfix:after { content: ""; display: table; clear: both; } .u5b38991ec0f86a2c0c79b2c8041711eb { display: block; transition: background-color 250ms; webkit-transition: background-color 250ms; width: 100%; opacity: 1; transition: opacity 250ms; webkit-transition: opacity 250ms; background-color: #95A5A6; } .u5b38991ec0f86a2c0c79b2c8041711eb:active , .u5b38991ec0f86a2c0c79b2c8041711eb:hover { opacity: 1; transition: opacity 250ms; webkit-transition: opacity 250ms; background-color: #2C3E50; } .u5b38991ec0f86a2c0c79b2c8041711eb .centered-text-area { width: 100%; position: relative ; } .u5b38991ec0f86a2c0c79b2c8041711eb .ctaText { border-bottom: 0 solid #fff; color: #2980B9; font-size: 16px; font-weight: bold; margin: 0; padding: 0; text-decoration: underline; } .u5b38991ec0f86a2c0c79b2c8041711eb .postTitle { color: #FFFFFF; font-size: 16px; font-weight: 600; margin: 0; padding: 0; width: 100%; } .u5b38991ec0f86a2c0c79b2c8041711eb .ctaButton { background-color: #7F8C8D!important; color: #2980B9; border: none; border-radius: 3px; box-shadow: none; font-size: 14px; font-weight: bold; line-height: 26px; moz-border-radius: 3px; text-align: center; text-decoration: none; text-shadow: none; width: 80px; min-height: 80px; background: url(https://artscolumbia.org/wp-content/plugins/intelly-related-posts/assets/images/simple-arrow.png)no-repeat; position: absolute; right: 0; top: 0; } .u5b38991ec0f86a2c0c79b2c8041711eb:hover .ctaButton { background-color: #34495E!important; } .u5b38991ec0f86a2c0c79b2c8041711eb .centered-text { display: table; height: 80px; padding-left : 18px; top: 0; } .u5b38991ec0f86a2c0c79b2c8041711eb .u5b38991ec0f86a2c0c79b2c8041711eb-content { display: table-cell; margin: 0; padding: 0; padding-right: 108px; position: relative; vertical-align: middle; width: 100%; } .u5b38991ec0f86a2c0c79b2c8041711eb:after { content: ""; display: block; clear: both; } READ: These days, information resources have developed t EssayMaybe I should just point fingers and blame others for bad stuff that happens to me. Sorry, but I take too much pride in working for what I want out of life instead of sitting back and blaming others for what I dont have. And in the same respect, if I screw up, I admit that I screwed up. Nobodys fault but my own. And if I ever commit some crime and get caught, blame ME instead of the economy, the gun laws, the drug laws, the media, the weather, or any other stupid thing that is on the cool list of things to blame today.

Osteogenesis Imperfecta essays

Osteogenesis Imperfecta essays Osteogenesis Imperfecta is a bone disease that is otherwise known as brittle bone disease. It is a genetic disorder that affects some extra skeletal tissues, teeth, and heart valves. Those are the things that this disease affects but not so severely, it mostly causes people to have problems with their bones and muscles. This disease causes a persons bones to be very breakable and their muscles to become very weak, in the area of all the breaks. All of these things happen as a result of one out of two genes that carry the instructions for type one collagen, this collagen is what carries these deformities. These genes are a major part of a persons body, they are a part of the proteins in the bone and the skin. This is why a persons bones and muscles are so affected by this disease. There are several types and levels of this disease. Type I is the mildest form. It is inherited as a dominant trait; with this type your physical activity is limited. Type I mostly affects your legs and arms. Sometimes it appears that for a long while you will have no disability at all. Type II is lethal; it starts to effect a person while they are in the uterus or shortly after birth. This type effects the whole of a persons body. Most of the fractures will occur in the ribcage area, which could cause many different problems in other parts of the body. Type III is only a little more severe than Type I and type IV is only a little more severe than Type II. Type II can increase with in severity with age. Types I, III, and IV can start when a child begins to walk and can lessen in severity with age and then become more severe again if the person becomes pregnant or starts menopause. Some of the degenerative signs of OI: include hyper extensibility of the joints (double jointed-ness), also very thin almost see through skin, the persons teeth can be extremely prone to get cavities and break quite easily, the person could start to loo...

Activties - Training and career Dev Essay Example | Topics and Well Written Essays - 500 words

Activties - Training and career Dev - Essay Example The company tries to build strong communication with its customers, to get a better insight of their needs, and then formulates a technical team to work on it (Caterpillar). The business of the Caterpillar has a wide range, covering from mining equipments to electric power generators. Its core business is to provide mining solutions and to make the mining process easier and safer. Its manufacturing unit is a diverse one, which produces a number of equipments, mostly related to mining. These includes, drills, mining tractors, paving, backhoe and several other instruments, used in the mining and drilling process. Moreover, it manufactures gas and diesel high power generators, along with integrated systems panels, for petroleum and marine industries (Caterpillar). 2. Some of the core characteristics of the Caterpillar’s culture are, to work with zest and sincerity to deliver the best services to their customers. For this, a Worldwide Code of Conduct has been published, and the en tire staff follows that code. This helps in being connected with the suppliers, stakeholders and the customers, so to work as one big team (Caterpillar). Caterpillar also gives much importance to the personality and nature of the candidates, who wish to work for it. This is the reason that all the employees of it are passionate and loves their job. This helps in achieving optimum result from each employee, helping the company grow and progress.

Introduction to National Response Framework Essay

Introduction to National Response Framework - Essay Example The fire dispatch and police centers were rendered inaccessible by floods in affected areas like New Orleans. In the event of a disaster, incident command structures provide the chance for local agencies’ officials to control response operations, learn about the magnitude of the problem, manage assets, and also to prompt assistance from State administration. In the absence of any incident command structure, it becomes impossible for local emergency response leaders to effectively direct their efforts or issue any command on local operations. All communication apparatus, including safety radio calls and 911 worked properly prompting people to communicate via written papers placed on bottles and dropping them from aircrafts. The officials of local emergency response agencies could not locate any command structures operating normally under the tumult. There was complete communication infrastructure breakdown, which completely jeopardized the efforts of local emergency response agencies. The roads were all out of place, which made it more difficult to ensure effect response to the disast er. The need for Federal Government to enhance its ability to swiftly and effectively collect environmental information and supply local agencies with adequate data remains imperative for effective disaster