PHP

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PHP
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Arrays
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Lists
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List
Red Sox players Varitek Papelbon Pedroia
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Numbered list
sox array("Varitek", "Papelbon", "Pedroia")
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Numbered list
Array
sox0 "Varitek"sox1 "Papelbon"
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Dictionary list
sox array( "catcher" gt "Varitek",
"closer" gt "Papelbon", second_base" gt
"Pedroia")
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Dictionary list
Associative array
sox"catcher" "Varitek"sox"closer"
"Papelbon"
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Working with arraysBuilt-in functions
count(sox) 3empty(sox)
falsearray_push(sox, "Lowell") "Varitek",
"Papelbon", "Pedroia", "Lowell"array_pop(sox)
"Varitek"
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Working with arraysSorting
sox array("Varitek", "Papelbon", "Pedroia")
sort(sox)
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Working with arraysSorting
sort(sox)
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Working with arraysSorting
asort(sox)
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Functions
f(x) x 1
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Functions
f(x) x 1 f(2)
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Functions
f(x) x 1 f(2) 2 1
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Functions
f(x) x 1 f(2) 2 1 f(2) 3
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Functions
f(x) x 1
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Functions
f(x) x 1 function add_one_to(x) x 1
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Functions
f(x) x 1 function add_one_to(x) x
1 function add_one_to(x) x 1
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Functions
f(x) x 1 function add_one_to(x) x
1 function add_one_to(x) x 1 function
add_one_to(x) x 1
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Functions
f(x) x 1 function add_one_to(x) x
1 function add_one_to(x) x 1 function
add_one_to(x) x 1 function add_one_to(x)
return x 1
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Functions
function add_one_to(x) return x 1
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Functions
add_one_to(x) return x 1 function
add_one_to(2) return 2 1
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Functions
add_one_to(x) return x 1 function
add_one_to(2) return 2 1 function
add_one_to(2) return 3
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Functions
add_one_to(2) 3
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Functions
function name(parameters) statements
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Functions Arrays
sox array("Varitek", "Papelbon",
"Pedroia")array_map("strtoupper", sox)
"VARITEK", "PAPELBON", "PEDROIA"
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Refactoring
Any change to a computer program's code which
improves its readability or simplifies its
structure without changing its results