#Php if else archive
#Php if else code

Note to editors: the behaviour described is specifically linked to the use of an else, but this note could also be added to the more general 'Alternative syntax for control structures' page as it's also commenting on mixing syntaxes.The above if statement is used when the execution of one if statement depends on another if statement. avoid mixing syntaxes inside the blocks (even if it works using this semi-colon trick). avoid mixing alternate syntax and one liners in if/else control structures Subsequent semi-colons don't matter, and the semi-colon can be anywhere: at the end of the line, on the following line on its own, or just before the else like ' else'. I can only guess that the added semi-colon makes it work by 'closing the if' in a way.

'$var=1 ' is enough, even a single semi-colon is, but read below).Ī third way is to add a semi-colon to the one-liner, having two if necessary:

#Php if else code

Or write some more code on a newline between the one-liner and the following else (eg. If ( true ) Įither use the alternate syntax on the line in error: The alternative is to duplicate the unconditional code throughout the construct.Īlternate syntax is great (dont remove it!), but take care using 'else:' after one liners, this wont work: To insert unconditional preprocessing code for $e onward, one need only split the 'elseif': There is still a need for 'else if', as you may have additional code to be executed unconditionally at some rung of the ladder an 'else if' construction allows this unconditional code to be elegantly inserted before or after the entire rest of the process. Nobody normally nests if() blocks to more than a thousand levels unless they're trying to break things, which is a whole different problem.) (Increasing $limit will also eventually cause a parser stack overflow error, but the level where this happens is ridiculous in real world terms. This test should show that 'elseif' executes in roughly two-thirds the time of 'else if'. C++), it's important to recognise that 'else if' is a nested language construct and 'elseif' is a linear language construct they may be compared in performance to a recursive loop as opposed to an iterative loop.

If you're coming from another language that does not have the 'elseif' construct (e.g.

#Php if else archive

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