Maxxus PRO SPK-23 Especificaciones descargar pdf (Pagina 8)

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101

PHP AND MYSQL WEB DEVELOPMENT

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Associative Arrays ................................................................................73

Initializing an Associative Array ....................................................73

Accessing the Array Elements ........................................................73

Using Loops with each() and list() ..................................................74

Multidimensional Arrays ......................................................................75

Sorting Arrays ......................................................................................79

Using sort() ......................................................................................79

Using asort() and ksort() to Sort Associative Arrays ......................79

Sorting in Reverse ..........................................................................80

Sorting Multidimensional Arrays ........................................................80

User Defined Sorts ..........................................................................80

Reverse User Sorts ..........................................................................82

Reordering Arrays ................................................................................83

Using shuffle() ................................................................................83

Using array_reverse() ......................................................................84

Loading Arrays from Files ....................................................................85

Other Array Manipulations ..................................................................88

Navigating Within an Array: each, current(), reset(),

end(), next(), pos(), and prev() ....................................................88

Applying Any Function to Each Element in an Array:

array_walk() ..................................................................................89

Counting Elements in an Array: count(), sizeof(), and

array_count_values() ....................................................................90

Converting Arrays to Scalar Variables: extract() ............................91

Further Reading ....................................................................................92

Next ......................................................................................................92

4 String Manipulation and Regular Expressions 93

Example Application: Smart Form Mail ..............................................94

Formatting Strings ................................................................................96

Trimming Strings: chop(), ltrim(), and trim() ................................96

Formatting Strings for Presentation ................................................97

Formatting Strings for Storage: AddSlashes() and StripSlashes() 100

Joining and Splitting Strings with String Functions ..........................101

Using explode(), implode(), and join() ........................................102

Using strtok() ................................................................................102

Using substr() ................................................................................103

Comparing Strings ..............................................................................104

String Ordering: strcmp(),strcasecmp(), and strnatcmp() ............104

Testing String Length with strlen() ..............................................105

Matching and Replacing Substrings with String Functions ..............105

Finding Strings in Strings: strstr(), strchr(), strrchr(), stristr() ......106

Finding the Position of a Substring: strpos(), strrpos() ................107

Replacing Substrings: str_replace(), substr_replace() ..................108

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