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72 ” Zend_Http_Client // Another way to set the request method $client->setMethod(Zend_Http_Client::GET); ?> • The URL for the request can either be passed as the first parameter to the Zend_Http_Client constructor or via the setUri method after the client instance is created. Both methods accept the URI as either a string or an instance of Zend_Uri_Http. • The request method of the client is used to dispatch the request, taking an optional parameter of a string containing the HTTP request method to use. GET is used by default. The HTTP request method can also be set via the client setMethod method using the client class constant named for that HTTP request method. R esponses The response returned by the client’s request method has a number of useful accessor methods.
Zend_Http_Client ” 73 // Returns TRUE for 100- and 200-level status codes var_dump($response->isSuccessul()); // Returns TRUE for 400- and 500-level status codes var_dump($response->isError()); ?> URL H andling By default, Zend_Http_Client uses Zend_Uri_Http to validate any URI that is passed into the client. U se of unconventional URLs, particularly those using characters described as disallo wed by section 2.4.3 of RFC 2396 (the predecessor to RFC 3986), may cause validation failure. See the code sample belo w for ho w to deal with this situation. Custom H eaders The setHeaders method is the S wiss Army Knife of header management for Zend_Http_Client. See the example belo w for the multitude of ways in which headers can be set.
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vi ” CONTENTS Referring URLs . .
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viii ” CONTENTS HTTP Authenticati
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x ” CONTENTS Chapter 14 — PCRE
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xiv ” CONTENTS pleted. Each had a
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For ewor d W eb scraping is the fut
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Chapter 1 Introduction If you are l
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Introduction ” 3 in some instance
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Introduction ” 5 • Chapters 3-7
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8 ” HTTP R equests The HTTP proto
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10 ” HTTP http://en.wikipedia.org
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12 ” HTTP i Query String Limits M
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14 ” HTTP Server: Apache X-Powere
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18 ” HTTP Content Caching Two met
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Chapter 13 CSS Selector Libraries T
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CSS Selector Libraries ” 131 Abou
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CSS Selector Libraries ” 133 •
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CSS Selector Libraries ” 139 It
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Chapter 14 PCRE Extension There are
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PCRE Extension ” 145 Anchors Y o
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PCRE Extension ” 147 // Matches
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PCRE Extension ” 149 if (preg_mat
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PCRE Extension ” 151 The first wa
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PCRE Extension ” 153 • T ouse a
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A p p e n d i x A Legality of W e S
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Legality of W e b Scraping ” 167
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