PHP logical operator [duplicate]
up vote
2
down vote
favorite
This question already has an answer here:
Does PHP have short-circuit evaluation?
8 answers
When the isset() is executed the following check $_SESSION['mat'] == "1" is executed or the second verification is directly skipped since it is the first false?
Is there is where I have the doubt?
if(isset($_SESSION['mat']) and $_SESSION['mat']=="1"){}
php session if-statement logical-operators
edited Nov 19 at 12:56
Funk Forty Niner
80.4k124799
asked Nov 19 at 10:35
rai
175
marked as duplicate by Nigel Ren php
Users with the php badge can single-handedly close php questions as duplicates and reopen them as needed.
StackExchange.ready(function() {
if (StackExchange.options.isMobile) return;
$('.dupe-hammer-message-hover:not(.hover-bound)').each(function() {
var $hover = $(this).addClass('hover-bound'),
$msg = $hover.siblings('.dupe-hammer-message');
$hover.hover(
function() {
$hover.showInfoMessage('', {
messageElement: $msg.clone().show(),
transient: false,
position: { my: 'bottom left', at: 'top center', offsetTop: -7 },
dismissable: false,
relativeToBody: true
});
},
function() {
StackExchange.helpers.removeMessages();
}
);
});
});
Nov 19 at 10:42
This question has been asked before and already has an answer. If those answers do not fully address your question, please ask a new question.
add a comment |
up vote
2
down vote
favorite
This question already has an answer here:
Does PHP have short-circuit evaluation?
8 answers
When the isset() is executed the following check $_SESSION['mat'] == "1" is executed or the second verification is directly skipped since it is the first false?
Is there is where I have the doubt?
if(isset($_SESSION['mat']) and $_SESSION['mat']=="1"){}
php session if-statement logical-operators
edited Nov 19 at 12:56
Funk Forty Niner
80.4k124799
asked Nov 19 at 10:35
rai
175
marked as duplicate by Nigel Ren php
Users with the php badge can single-handedly close php questions as duplicates and reopen them as needed.
StackExchange.ready(function() {
if (StackExchange.options.isMobile) return;
$('.dupe-hammer-message-hover:not(.hover-bound)').each(function() {
var $hover = $(this).addClass('hover-bound'),
$msg = $hover.siblings('.dupe-hammer-message');
$hover.hover(
function() {
$hover.showInfoMessage('', {
messageElement: $msg.clone().show(),
transient: false,
position: { my: 'bottom left', at: 'top center', offsetTop: -7 },
dismissable: false,
relativeToBody: true
});
},
function() {
StackExchange.helpers.removeMessages();
}
);
});
});
Nov 19 at 10:42
This question has been asked before and already has an answer. If those answers do not fully address your question, please ask a new question.
add a comment |
up vote
2
down vote
favorite
up vote
2
down vote
favorite
This question already has an answer here:
Does PHP have short-circuit evaluation?
8 answers
When the isset() is executed the following check $_SESSION['mat'] == "1" is executed or the second verification is directly skipped since it is the first false?
Is there is where I have the doubt?
if(isset($_SESSION['mat']) and $_SESSION['mat']=="1"){}
php session if-statement logical-operators
edited Nov 19 at 12:56
Funk Forty Niner
80.4k124799
asked Nov 19 at 10:35
rai
175
This question already has an answer here:
Does PHP have short-circuit evaluation?
8 answers
When the isset() is executed the following check $_SESSION['mat'] == "1" is executed or the second verification is directly skipped since it is the first false?
Is there is where I have the doubt?
if(isset($_SESSION['mat']) and $_SESSION['mat']=="1"){}
This question already has an answer here:
Does PHP have short-circuit evaluation?
8 answers
php session if-statement logical-operators
php session if-statement logical-operators
edited Nov 19 at 12:56
Funk Forty Niner
80.4k124799
asked Nov 19 at 10:35
rai
175
edited Nov 19 at 12:56
Funk Forty Niner
80.4k124799
asked Nov 19 at 10:35
rai
175
edited Nov 19 at 12:56
Funk Forty Niner
80.4k124799
edited Nov 19 at 12:56
Funk Forty Niner
80.4k124799
edited Nov 19 at 12:56
Funk Forty Niner
80.4k124799
80.4k124799
asked Nov 19 at 10:35
rai
175
asked Nov 19 at 10:35
rai
175
asked Nov 19 at 10:35
rai
175
175
marked as duplicate by Nigel Ren php
Users with the php badge can single-handedly close php questions as duplicates and reopen them as needed.
StackExchange.ready(function() {
if (StackExchange.options.isMobile) return;
$('.dupe-hammer-message-hover:not(.hover-bound)').each(function() {
var $hover = $(this).addClass('hover-bound'),
$msg = $hover.siblings('.dupe-hammer-message');
$hover.hover(
function() {
$hover.showInfoMessage('', {
messageElement: $msg.clone().show(),
transient: false,
position: { my: 'bottom left', at: 'top center', offsetTop: -7 },
dismissable: false,
relativeToBody: true
});
},
function() {
StackExchange.helpers.removeMessages();
}
);
});
});
Nov 19 at 10:42
This question has been asked before and already has an answer. If those answers do not fully address your question, please ask a new question.
marked as duplicate by Nigel Ren php
Users with the php badge can single-handedly close php questions as duplicates and reopen them as needed.
StackExchange.ready(function() {
if (StackExchange.options.isMobile) return;
$('.dupe-hammer-message-hover:not(.hover-bound)').each(function() {
var $hover = $(this).addClass('hover-bound'),
$msg = $hover.siblings('.dupe-hammer-message');
$hover.hover(
function() {
$hover.showInfoMessage('', {
messageElement: $msg.clone().show(),
transient: false,
position: { my: 'bottom left', at: 'top center', offsetTop: -7 },
dismissable: false,
relativeToBody: true
});
},
function() {
StackExchange.helpers.removeMessages();
}
);
});
});
Nov 19 at 10:42
This question has been asked before and already has an answer. If those answers do not fully address your question, please ask a new question.
add a comment |
add a comment |
2 Answers
2
active
oldest
votes
up vote
2
down vote
accepted
If the first part of your if statement already returns false the second part will not be evaluated. Your if statement looks good this way and shouldn't throw any index out of bounds errors.
answered Nov 19 at 10:38
Dirk Scholten
574217
add a comment |
up vote
0
down vote
When the isset is executed the following check is executed ($ _ SESSION ['mat'] == "1") or the second verification is directly skipped since it is the first false.
isset() will check if a variable is set otherwise it will return false. All the code inside the if() statement will be executed, so in your case, if the $_SESSION array variable isn't set, the second control, in your case and (that can be expressed also using &&) will be skipped.
answered Nov 19 at 10:39
user9741470
658115
add a comment |
2 Answers
2
active
oldest
votes
2 Answers
2
active
oldest
votes
active
oldest
votes
active
oldest
votes
up vote
2
down vote
accepted
If the first part of your if statement already returns false the second part will not be evaluated. Your if statement looks good this way and shouldn't throw any index out of bounds errors.
answered Nov 19 at 10:38
Dirk Scholten
574217
add a comment |
up vote
2
down vote
accepted
If the first part of your if statement already returns false the second part will not be evaluated. Your if statement looks good this way and shouldn't throw any index out of bounds errors.
answered Nov 19 at 10:38
Dirk Scholten
574217
add a comment |
up vote
2
down vote
accepted
up vote
2
down vote
accepted
If the first part of your if statement already returns false the second part will not be evaluated. Your if statement looks good this way and shouldn't throw any index out of bounds errors.
answered Nov 19 at 10:38
Dirk Scholten
574217
If the first part of your if statement already returns false the second part will not be evaluated. Your if statement looks good this way and shouldn't throw any index out of bounds errors.
answered Nov 19 at 10:38
Dirk Scholten
574217
answered Nov 19 at 10:38
Dirk Scholten
574217
answered Nov 19 at 10:38
Dirk Scholten
574217
answered Nov 19 at 10:38
Dirk Scholten
574217
574217
add a comment |
add a comment |
up vote
0
down vote
When the isset is executed the following check is executed ($ _ SESSION ['mat'] == "1") or the second verification is directly skipped since it is the first false.
isset() will check if a variable is set otherwise it will return false. All the code inside the if() statement will be executed, so in your case, if the $_SESSION array variable isn't set, the second control, in your case and (that can be expressed also using &&) will be skipped.
answered Nov 19 at 10:39
user9741470
658115
add a comment |
up vote
0
down vote
When the isset is executed the following check is executed ($ _ SESSION ['mat'] == "1") or the second verification is directly skipped since it is the first false.
isset() will check if a variable is set otherwise it will return false. All the code inside the if() statement will be executed, so in your case, if the $_SESSION array variable isn't set, the second control, in your case and (that can be expressed also using &&) will be skipped.
answered Nov 19 at 10:39
user9741470
658115
add a comment |
up vote
0
down vote
up vote
0
down vote
When the isset is executed the following check is executed ($ _ SESSION ['mat'] == "1") or the second verification is directly skipped since it is the first false.
isset() will check if a variable is set otherwise it will return false. All the code inside the if() statement will be executed, so in your case, if the $_SESSION array variable isn't set, the second control, in your case and (that can be expressed also using &&) will be skipped.
answered Nov 19 at 10:39
user9741470
658115
When the isset is executed the following check is executed ($ _ SESSION ['mat'] == "1") or the second verification is directly skipped since it is the first false.
isset() will check if a variable is set otherwise it will return false. All the code inside the if() statement will be executed, so in your case, if the $_SESSION array variable isn't set, the second control, in your case and (that can be expressed also using &&) will be skipped.
answered Nov 19 at 10:39
user9741470
658115
answered Nov 19 at 10:39
user9741470
658115
answered Nov 19 at 10:39
user9741470
658115
answered Nov 19 at 10:39
user9741470
658115
658115
add a comment |
add a comment |
