PHP opretors | Logical Operator |String Operator | Array Operator | Conditional Assignment Opreto
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PHP TUTORIAL
PHP Introduction
PHP Logical Operators
The PHP logical operators are used to combine conditional statements.
++$x Pre-increment Increments $x by one, then returns $x
$x++ Post-increment Returns $x, then increments $x by one
--$x Pre-decrement Decrements $x by one, then returns $x
$x-- Post-decrement Returns $x, then decrements $x by one
PHP String Operators
PHP has two operators that are specially designed for strings.
. Concatenation $txt1 . $txt2 Concatenation of $txt1 and $txt2
.= Concatenation assignment $txt1 .= $txt2 Appends $txt2 to $txt1
. Concatenation $txt1 . $txt2 Concatenation of $txt1 and $txt2
.= Concatenation assignment $txt1 .= $txt2 Appends $txt2 to $txt1
PHP Array Operators
The PHP array operators are used to compare arrays
Union $x + $y Union of $x and $y
== Equality $x == $y Returns true if $x and $y have the same key/value pairs
=== Identity $x === $y Returns true if $x and $y have the same key/value pairs in the same order and of the same types
!= Inequality $x != $y Returns true if $x is not equal to $y
!== Non-identity $x !== $y Returns true if $x is not identical to $y
PHP Conditional Assignment Operators
The PHP conditional assignment operators are used to set a value depending on conditions:
?: Ternary $x = expr1 ? expr2 : expr3 Returns the value of $x.
The value of $x is expr2 if expr1 = TRUE.
The value of $x is expr3 if expr1 = FALSE
?? Null coalescing $x = expr1 ?? expr2 Returns the value of $x.
The value of $x is expr1 if expr1 exists, and is not NULL.
If expr1 does not exist, or is NULL, the value of $x is expr2.
Introduced in PHP 7
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