PHP2008-11-22
do...while Loops in PHP
The do...while loop is similar to the previous while loop, except that the truth expression is checked at the end of each iteration instead of at the beginning. This means that the
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PHP2008-11-22
while loops in PHP
while loops are the simplest kind of loops. In the beginning of each iteration, the while's truth expression is evaluated. If it evaluates to true, the loop keeps on running and th
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switch Statements in PHP
You can use the switch construct to elegantly replace certain lengthy if/ elseif constructs. It is given an expression and compares it to all possible case expressions listed in it
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if Statements in PHP
if statements are the most common conditional constructs, and they exist in most programming languages. The expression in the if statement is referred to as the truth expression. I
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Comparison operators in PHP
Comparison operators enable you to determine the relationship between two operands.
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Assignment operators in PHP
Assignment operators enable you to write a value to a variable. The first operand (the one on the left of the assignment operator or l value) must be a variable. The value of an as
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PHP2008-11-22
Binary Operators in PHP
All the binary operators (except for the concatenation operator) work only on numeric operands. If one or both of the operands are strings, Booleans, nulls, or resources, they are
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Constants in PHP
In PHP, you can define names, called constants, for simple values. As the name implies, you cannot change these constants once they represent a certain value. The names for constan
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Using list() in PHP
The list() construct is a way of assigning multiple array offsets to multiple variables in one statement:
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Traversing Arrays Using list() and each() in PHP
Although foreach() is the nicer way of iterating over an array, an additional way of traversing an array is by using a combination of the list() construct and the each() function:
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Traversing Arrays Using foreach in PHP
There are a few different ways of iterating over an array. The most elegant way is the foreach() loop construct. The general syntax of this loop is foreach($array as [$key =>] [&]
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Booleans in PHP
Booleans were introduced for the first time in PHP 4 and didn't exist in prior versions. A Boolean value can be either true or false. PHP automatically converts types when needed.
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