Difference between revisions of "PHP-and-MySQL/C2/Common-Errors-Part-3/English-timed"

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(Created page with '{| border=1 !Time !Narration |- |0:00 |Right now I am onto the last two common errors that I have included. |- |0:05 |And we will start with the hard one. |- |0:09 |This is php…')
 
 
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{| border=1
 
{| border=1
−
!Time
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|'''Time'''
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!Narration
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|'''Narration'''
 
|-
 
|-
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|0:00
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|00:00
 
|Right now I am onto the last two common errors that I have included.  
 
|Right now I am onto the last two common errors that I have included.  
 
|-
 
|-
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|0:05
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|00:05
 
|And we will start with the hard one.  
 
|And we will start with the hard one.  
 
|-
 
|-
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|0:09
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|00:09
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|This is php header and we are using "header" function going to a location.
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|This is the '''php''' '''header''' and we are using "header" function going to a location.
 
|-
 
|-
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|0:14
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|00:14
−
|And here I have got some html code.  
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|And here, I have got some '''html code'''.  
 
|-
 
|-
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|0:18
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|00:18
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|This is a header tag, I am saying "Welcome!".
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|This is a '''header tag''', I am saying "Welcome!".
 
|-
 
|-
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|0:21
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|00:21
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|And our "goto" variable is "google dot com".
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|And our '''$goto''' variable is "google dot com".
 
|-
 
|-
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|0:26
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|00:26
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|If the "goto" exists, which it currently does, we are going to redirect the page to a u-r-l "google dot com".  
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|If the '''$goto''' exists which it currently does, we are going to redirect the page to a u-r-l "google dot com".  
 
|-
 
|-
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|0:35
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|00:35
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|Right now, this will return an error.
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|Right now, this will return an '''error'''
 
|-
 
|-
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|0:37
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|00:37
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|And the error is - Oh! um... Okay that’s why. "o b start".
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|and the error is - Oh! um... Okay that’s why. "o b_ start()".
 
|-
 
|-
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|0:50
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|00:50
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|Lets get rid of this.  That wasn’t supposed to be there. That code is to fix the error!
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|Let's get rid of this.  That wasn’t supposed to be there. That code is to fix the '''error'''!
 
|-
 
|-
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|0:56
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|00:56
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|Sorry, so we will go to "php header" and we have got "Welcome!" - our html code.
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|Sorry, so we will go to the "php header" and we have got "Welcome!" - our '''html code'''.
 
|-
 
|-
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|1:03
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|01:03
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|Then a warning - "Cannot modify  header information – headers already sent by..." and all of this.
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|Then a '''Warning - "Cannot modify  header information – headers already sent by..." and all of this.
 
|-
 
|-
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|1:10
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|01:10
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|Okay so our headers have already been sent. This is the line no. by the way.
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|Okay; so our '''headers''' have already been sent. This is the line number, by the way.
 
|-
 
|-
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|1:16
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|01:16
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|1, 2, 3 so if it gives you an error like "phpheader dot php" colon 3, then the error has occurred on the line no. 3.
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|1, 2, 3 so if it gives you an error like "phpheader dot php" colon 3 then the error has occurred on the line number 3.
 
|-
 
|-
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|1:26
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|01:26
 
|So that's where the error is - on line 3, okay?  
 
|So that's where the error is - on line 3, okay?  
 
|-
 
|-
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|1:32
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|01:32
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|And this error has been generated by line 9, which if you go here, is our "header" function.  
+
|And this '''error''' has been generated by line 9 which if you go here, is our "header" function.  
 
|-
 
|-
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|1:39
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|01:39
−
|So the reason that this is happening is we are already sending our html code.
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|So, the reason that this is happening is we are already sending our '''html code'''.
 
|-
 
|-
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|1:47
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|01:47
−
|If I get rid of this by commenting it, and I were to refresh then we would be redirected to google.
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|If I get rid of this by commenting it and I were to '''refresh''' then we would be redirected to google.
 
|-
 
|-
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|1:54
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|01:54
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|But the point is that we want this welcome header here.
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|But the point is that we want this "Welcome" '''header''' here.
 
|-
 
|-
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|1:59
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|01:59
−
|And you can’t actually put html before a header function, going to location and other features of this function.  
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|And you can’t actually put '''html''' before a '''header''' function, going to '''Location''' and other features of this function.  
 
|-
 
|-
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|2:10
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|02:10
 
|You shouldn't do so.
 
|You shouldn't do so.
 
|-
 
|-
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|2:15
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|02:15
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|So as you saw a minute ago that is "ob underscore start".
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|So, as you saw a minute ago, that is "ob underscore start()".
 
|-
 
|-
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|2:20
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|02:20
 
|What this does is, it fixes this problem for us.
 
|What this does is, it fixes this problem for us.
 
|-
 
|-
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|2:25
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|02:25
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|So I can come here to "phpheader" and it works, even though I have still got my html code echoed here before my header.
+
|So, if I come here to "phpheader" and it works even though I have still got my '''html code''' echoed here, before my '''header'''.
 
|-
 
|-
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|2:37
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|02:37
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|So without this we get an error (pause) and with this our header works fine, okay?   
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|So, without this we get an '''error''' (pause) and with this our '''header''' works fine, okay?   
 
|-
 
|-
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|2:47
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|02:47
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|Despite the initial rule of no html output before header up here.
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|Despite the initial rule of 'no html output before header', up here.
 
|-
 
|-
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|2:53
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|02:53
 
|That should be pretty clear by now.
 
|That should be pretty clear by now.
 
|-
 
|-
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|2:55
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|02:55
 
|Now, the last one is extremely simple.  
 
|Now, the last one is extremely simple.  
 
|-
 
|-
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|2:58
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|02:58
 
|I don’t even need to explain it but anyway.
 
|I don’t even need to explain it but anyway.
 
|-
 
|-
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|3:02
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|03:02
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|This is "include a file which doesn’t even exist" named as "idontexist dot php".  
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|This is '''include''' a file which doesn’t even exist named as "idontexist dot php".  
 
|-
 
|-
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|3:08
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|03:08
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|So lets have a look. Um.. where is it? "missing dot php".  
+
|So, let's have a look. Um.. where is it? "missing dot php".  
 
|-
 
|-
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|3:13
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|03:13
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|Oh no! Its not.  "open dot php".  
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|Oh no! It's not.  "open dot php".  
 
|-
 
|-
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|3:16
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|03:16
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|Okay! So - include "idontexist dot php" failed to open stream; no such file or directory in that name here.
+
|Okay! So - '''include idontexist dot php''' failed to open stream: No such file or directory in that name here.
 
|-
 
|-
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|3:25
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|03:25
 
|Our file name and directory on line 3.
 
|Our file name and directory on line 3.
 
|-
 
|-
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|3:27
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|03:27
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|So lets come to line 3.
+
|So, let's come to line 3.
 
|-
 
|-
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|3:30
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|03:30
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|And that is the only line of significant code in this file.
+
|And that is the only line of significant '''code''' in this file.
 
|-
 
|-
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|3:35
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|03:35
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|We have another warning here - Failed to open "idontexist dot php" for inclusion and all of this.  So we get two errors.  
+
|We have another warning here - '''Failed to open "idontexist dot php" for inclusion...''' and all of this.  So, we get two errors.  
 
|-
 
|-
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|3:43
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|03:43
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|This is quite messy when you have a page that has "include a header file".
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|This is quite messy when you have a '''page''' that has '''include''' a header file.
 
|-
 
|-
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|3:50
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|03:50
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|Then these don’t look too nice. I mean you have probably been in a website before and you have seen this at the top.  
+
|Then these don’t look too nice. I mean you have probably been in a website before and you have seen this is at the top.  
 
|-
 
|-
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|3:57
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|03:57
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|You need to be attractive.  So you can put a "@ (at)" symbol in front and refresh.
+
|You need to be attractive.  So, you can put a "@ (at)" symbol in front of it. '''refresh'''.
 
|-
 
|-
−
|4:02
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|04:02
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|That won't show the error anymore.  
+
|That won't show the '''error''' anymore.  
 
|-
 
|-
−
|4:06
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|04:06
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|But it doesn’t excuse the fact that the file doesn’t exist.
+
|But, it doesn’t excuse the fact that the file doesn’t exist.
 
|-
 
|-
−
|4:10
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|04:10
 
|So the content of the file which doesn’t exist, won’t be included.  
 
|So the content of the file which doesn’t exist, won’t be included.  
 
|-
 
|-
−
|4:14
+
|04:14
−
|But yes, to be honest, looking at this, this is really pretty much self explanatory.  I just thought I should explain this anyways.
+
|But yes, to be honest, looking at this, this is really pretty much self explanatory.  I just thought I should explain this anyway.
 
|-
 
|-
−
|4:23
+
|04:23
−
|So we have got a small collection of errors that you might come across when you are programming in php.  
+
|So, we have got a small collection of errors that you might come across when you are programming in php.  
 
|-
 
|-
−
|4:30
+
|04:30
 
|If there are other errors that you are getting, then please message me and I will be happy to help.  
 
|If there are other errors that you are getting, then please message me and I will be happy to help.  
 
|-
 
|-
−
|4:39
+
|04:39
−
|Please subscribe for latest updates. Thanks for watching. This is Evan Varkey dubbing for the Spoken Tutorial project.
+
|Please subscribe for latest updates. Thanks for watching. This is Evan Varkey, dubbing for the Spoken Tutorial project.

Latest revision as of 16:58, 22 May 2015

Time Narration
00:00 Right now I am onto the last two common errors that I have included.
00:05 And we will start with the hard one.
00:09 This is the php header and we are using "header" function going to a location.
00:14 And here, I have got some html code.
00:18 This is a header tag, I am saying "Welcome!".
00:21 And our $goto variable is "google dot com".
00:26 If the $goto exists which it currently does, we are going to redirect the page to a u-r-l "google dot com".
00:35 Right now, this will return an error
00:37 and the error is - Oh! um... Okay that’s why. "o b_ start()".
00:50 Let's get rid of this. That wasn’t supposed to be there. That code is to fix the error!
00:56 Sorry, so we will go to the "php header" and we have got "Welcome!" - our html code.
01:03 Then a Warning - "Cannot modify header information – headers already sent by..." and all of this.
01:10 Okay; so our headers have already been sent. This is the line number, by the way.
01:16 1, 2, 3 so if it gives you an error like "phpheader dot php" colon 3 then the error has occurred on the line number 3.
01:26 So that's where the error is - on line 3, okay?
01:32 And this error has been generated by line 9 which if you go here, is our "header" function.
01:39 So, the reason that this is happening is we are already sending our html code.
01:47 If I get rid of this by commenting it and I were to refresh then we would be redirected to google.
01:54 But the point is that we want this "Welcome" header here.
01:59 And you can’t actually put html before a header function, going to Location and other features of this function.
02:10 You shouldn't do so.
02:15 So, as you saw a minute ago, that is "ob underscore start()".
02:20 What this does is, it fixes this problem for us.
02:25 So, if I come here to "phpheader" and it works even though I have still got my html code echoed here, before my header.
02:37 So, without this we get an error (pause) and with this our header works fine, okay?
02:47 Despite the initial rule of 'no html output before header', up here.
02:53 That should be pretty clear by now.
02:55 Now, the last one is extremely simple.
02:58 I don’t even need to explain it but anyway.
03:02 This is include a file which doesn’t even exist named as "idontexist dot php".
03:08 So, let's have a look. Um.. where is it? "missing dot php".
03:13 Oh no! It's not. "open dot php".
03:16 Okay! So - include idontexist dot php failed to open stream: No such file or directory in that name here.
03:25 Our file name and directory on line 3.
03:27 So, let's come to line 3.
03:30 And that is the only line of significant code in this file.
03:35 We have another warning here - Failed to open "idontexist dot php" for inclusion... and all of this. So, we get two errors.
03:43 This is quite messy when you have a page that has include a header file.
03:50 Then these don’t look too nice. I mean you have probably been in a website before and you have seen this is at the top.
03:57 You need to be attractive. So, you can put a "@ (at)" symbol in front of it. refresh.
04:02 That won't show the error anymore.
04:06 But, it doesn’t excuse the fact that the file doesn’t exist.
04:10 So the content of the file which doesn’t exist, won’t be included.
04:14 But yes, to be honest, looking at this, this is really pretty much self explanatory. I just thought I should explain this anyway.
04:23 So, we have got a small collection of errors that you might come across when you are programming in php.
04:30 If there are other errors that you are getting, then please message me and I will be happy to help.
04:39 Please subscribe for latest updates. Thanks for watching. This is Evan Varkey, dubbing for the Spoken Tutorial project.

Contributors and Content Editors

Minal, Pratik kamble, Sandhya.np14

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