<span <?php<br /><br />use</span><span Zend\Db\Sql\Select; </span><span //</span><span basic table</span> <span $select0</span> = <span new</span><span Select; </span><span $select0</span>->from('foo'<span ); </span><span //</span><span 'SELECT "foo".* FROM "foo"'; // table as TableIdentifier</span> <span $select1</span> = <span new</span><span Select; </span><span $select1</span>->from(<span new</span> TableIdentifier('foo', 'bar'<span )); </span><span //</span><span 'SELECT "bar"."foo".* FROM "bar"."foo"'; // table with alias</span> <span $select2</span> = <span new</span><span Select; </span><span $select2</span>->from(<span array</span>('f' => 'foo'<span )); </span><span //</span><span 'SELECT "f".* FROM "foo" AS "f"'; // table with alias with table as TableIdentifier</span> <span $select3</span> = <span new</span><span Select; </span><span $select3</span>->from(<span array</span>('f' => <span new</span> TableIdentifier('foo'<span ))); </span><span //</span><span 'SELECT "f".* FROM "foo" AS "f"'; // columns</span> <span $select4</span> = <span new</span><span Select; </span><span $select4</span>->from('foo')->columns(<span array</span>('bar', 'baz'<span )); </span><span //</span><span 'SELECT "foo"."bar" AS "bar", "foo"."baz" AS "baz" FROM "foo"'; // columns with AS associative array</span> <span $select5</span> = <span new</span><span Select; </span><span $select5</span>->from('foo')->columns(<span array</span>('bar' => 'baz'<span )); </span><span //</span><span 'SELECT "foo"."baz" AS "bar" FROM "foo"'; // columns with AS associative array mixed</span> <span $select6</span> = <span new</span><span Select; </span><span $select6</span>->from('foo')->columns(<span array</span>('bar' => 'baz', 'bam'<span )); </span><span //</span><span 'SELECT "foo"."baz" AS "bar", "foo"."bam" AS "bam" FROM "foo"'; // columns where value is Expression, with AS</span> <span $select7</span> = <span new</span><span Select; </span><span $select7</span>->from('foo')->columns(<span array</span>('bar' => <span new</span> Expression('COUNT(some_column)'<span ))); </span><span //</span><span 'SELECT COUNT(some_column) AS "bar" FROM "foo"'; // columns where value is Expression</span> <span $select8</span> = <span new</span><span Select; </span><span $select8</span>->from('foo')->columns(<span array</span>(<span new</span> Expression('COUNT(some_column) AS bar'<span ))); </span><span //</span><span 'SELECT COUNT(some_column) AS bar FROM "foo"'; // columns where value is Expression with parameters</span> <span $select9</span> = <span new</span><span Select; </span><span $select9</span>->from('foo')-><span columns( </span><span array</span><span ( </span><span new</span><span Expression( </span>'(COUNT(?) + ?) AS ?', <span array</span>('some_column', 5, 'bar'), <span array</span>(Expression::TYPE_IDENTIFIER, Expression::TYPE_VALUE, Expression::<span TYPE_IDENTIFIER) ) ) ); </span><span //</span><span 'SELECT (COUNT("some_column") + ?) AS "bar" FROM "foo"'; // array('column1' => 5); // // 'SELECT (COUNT("some_column") + \'5\') AS "bar" FROM "foo"'; // joins (plain)</span> <span $select10</span> = <span new</span><span Select; </span><span $select10</span>->from('foo')-><span join</span>('zac', 'm = n'<span ); </span><span //</span><span 'SELECT "foo".*, "zac".* FROM "foo" INNER JOIN "zac" ON "m" = "n"'; // join with columns</span> <span $select11</span> = <span new</span><span Select; </span><span $select11</span>->from('foo')-><span join</span>('zac', 'm = n', <span array</span>('bar', 'baz'<span )); </span><span //</span><span 'SELECT "foo".*, "zac"."bar" AS "bar", "zac"."baz" AS "baz" FROM "foo" INNER JOIN "zac" ON "m" = "n"'; // join with alternate type</span> <span $select12</span> = <span new</span><span Select; </span><span $select12</span>->from('foo')-><span join</span>('zac', 'm = n', <span array</span>('bar', 'baz'), Select::<span JOIN_OUTER); </span><span //</span><span 'SELECT "foo".*, "zac"."bar" AS "bar", "zac"."baz" AS "baz" FROM "foo" OUTER JOIN "zac" ON "m" = "n"'; // join with column aliases</span> <span $select13</span> = <span new</span><span Select; </span><span $select13</span>->from('foo')-><span join</span>('zac', 'm = n', <span array</span>('BAR' => 'bar', 'BAZ' => 'baz'<span )); </span><span //</span><span 'SELECT "foo".*, "zac"."bar" AS "BAR", "zac"."baz" AS "BAZ" FROM "foo" INNER JOIN "zac" ON "m" = "n"'; // join with table aliases</span> <span $select14</span> = <span new</span><span Select; </span><span $select14</span>->from('foo')-><span join</span>(<span array</span>('b' => 'bar'), 'b.foo_id = foo.foo_id'<span ); </span><span //</span><span 'SELECT "foo".*, "b".* FROM "foo" INNER JOIN "bar" AS "b" ON "b"."foo_id" = "foo"."foo_id"'; // where (simple string)</span> <span $select15</span> = <span new</span><span Select; </span><span $select15</span>->from('foo')->where('x = 5'<span ); </span><span //</span><span 'SELECT "foo".* FROM "foo" WHERE x = 5'; // where (returning parameters)</span> <span $select16</span> = <span new</span><span Select; </span><span $select16</span>->from('foo')->where(<span array</span>('x = ?' => 5<span )); </span><span //</span><span 'SELECT "foo".* FROM "foo" WHERE x = ?'; // array('where1' => 5); // // 'SELECT "foo".* FROM "foo" WHERE x = \'5\''; // group</span> <span $select17</span> = <span new</span><span Select; </span><span $select17</span>->from('foo')->group(<span array</span>('col1', 'col2'<span )); </span><span //</span><span 'SELECT "foo".* FROM "foo" GROUP BY "col1", "col2"';</span> <span $select18</span> = <span new</span><span Select; </span><span $select18</span>->from('foo')->group('col1')->group('col2'<span ); </span><span //</span><span 'SELECT "foo".* FROM "foo" GROUP BY "col1", "col2"';</span> <span $select19</span> = <span new</span><span Select; </span><span $select19</span>->from('foo')->group(<span new</span> Expression('DAY(?)', <span array</span>('col1'), <span array</span>(Expression::<span TYPE_IDENTIFIER))); </span><span //</span><span 'SELECT "foo".* FROM "foo" GROUP BY DAY("col1")'; // having (simple string)</span> <span $select20</span> = <span new</span><span Select; </span><span $select20</span>->from('foo')->having('x = 5'<span ); </span><span //</span><span 'SELECT "foo".* FROM "foo" HAVING x = 5'; // having (returning parameters)</span> <span $select21</span> = <span new</span><span Select; </span><span $select21</span>->from('foo')->having(<span array</span>('x = ?' => 5<span )); </span><span //</span><span 'SELECT "foo".* FROM "foo" HAVING x = ?'; // array('having1' => 5); // // 'SELECT "foo".* FROM "foo" HAVING x = \'5\''; // order</span> <span $select22</span> = <span new</span><span Select; </span><span $select22</span>->from('foo')->order('c1'<span ); </span><span //</span><span 'SELECT "foo".* FROM "foo" ORDER BY "c1" ASC'; // multiple order parts</span> <span $select23</span> = <span new</span><span Select; </span><span $select23</span>->from('foo')->order(<span array</span>('c1', 'c2'<span )); </span><span //</span><span 'SELECT "foo".* FROM "foo" ORDER BY "c1" ASC, "c2" ASC'; // mulitple order parts</span> <span $select24</span> = <span new</span><span Select; </span><span $select24</span>->from('foo')->order(<span array</span>('c1' => 'DESC', 'c2' => 'Asc')); <span //</span><span notice partially lower case ASC // 'SELECT "foo".* FROM "foo" ORDER BY "c1" DESC, "c2" ASC';</span> <span $select25</span> = <span new</span><span Select; </span><span $select25</span>->from('foo')->order(<span array</span>('c1' => 'asc'))->order('c2 desc'); <span //</span><span notice partially lower case ASC // 'SELECT "foo".* FROM "foo" ORDER BY "c1" ASC, "c2" DESC'; // limit</span> <span $select26</span> = <span new</span><span Select; </span><span $select26</span>->from('foo')->limit(5<span ); </span><span //</span><span 'SELECT "foo".* FROM "foo" LIMIT ?'; // array('limit' => 5); // // 'SELECT "foo".* FROM "foo" LIMIT \'5\''; // limit with offset</span> <span $select27</span> = <span new</span><span Select; </span><span $select27</span>->from('foo')->limit(5)->offset(10<span ); </span><span //</span><span 'SELECT "foo".* FROM "foo" LIMIT ? OFFSET ?'; // array('limit' => 5, 'offset' => 10); // // 'SELECT "foo".* FROM "foo" LIMIT \'5\' OFFSET \'10\''; // joins with a few keywords in the on clause</span> <span $select28</span> = <span new</span><span Select; </span><span $select28</span>->from('foo')-><span join</span>('zac', '(m = n AND c.x) BETWEEN x AND y.z'<span ); </span><span //</span><span 'SELECT "foo".*, "zac".* FROM "foo" INNER JOIN "zac" ON ("m" = "n" AND "c"."x") BETWEEN "x" AND "y"."z"'; // order with compound name</span> <span $select29</span> = <span new</span><span Select; </span><span $select29</span>->from('foo')->order('c1.d2'<span ); </span><span //</span><span 'SELECT "foo".* FROM "foo" ORDER BY "c1"."d2" ASC'; // group with compound name</span> <span $select30</span> = <span new</span><span Select; </span><span $select30</span>->from('foo')->group('c1.d2'<span ); </span><span //</span><span 'SELECT "foo".* FROM "foo" GROUP BY "c1"."d2"'; // join with expression in ON part</span> <span $select31</span> = <span new</span><span Select; </span><span $select31</span>->from('foo')-><span join</span>('zac', <span new</span> Expression('(m = n AND c.x) BETWEEN x AND y.z'<span )); </span><span //</span><span 'SELECT "foo".*, "zac".* FROM "foo" INNER JOIN "zac" ON (m = n AND c.x) BETWEEN x AND y.z'; // subselects</span> <span $select32subselect</span> = <span new</span><span Select; </span><span $select32subselect</span>->from('bar')->where->like('y', '%Foo%'<span ); </span><span $select32</span> = <span new</span><span Select; </span><span $select32</span>->from(<span array</span>('x' => <span $select32subselect</span><span )); </span><span //</span><span 'SELECT "x".* FROM (SELECT "bar".* FROM "bar" WHERE "y" LIKE ?) AS "x"'; // 'SELECT "x".* FROM (SELECT "bar".* FROM "bar" WHERE "y" LIKE \'%Foo%\') AS "x"'; // use array in where, predicate in where</span> <span $select33</span> = <span new</span><span Select; </span><span $select33</span>->from('table')->columns(<span array</span>('*'))->where(<span array</span><span ( </span>'c1' => <span null</span>, 'c2' => <span array</span>(1, 2, 3), <span new</span> \Zend\Db\Sql\Predicate\IsNotNull('c3'<span ) )); </span><span //</span><span 'SELECT "table".* FROM "table" WHERE "c1" IS NULL AND "c2" IN (?, ?, ?) AND "c3" IS NOT NULL'; // 'SELECT "table".* FROM "table" WHERE "c1" IS NULL AND "c2" IN (\'1\', \'2\', \'3\') AND "c3" IS NOT NULL'; // Expression objects in order</span> <span $select34</span> = <span new</span><span Select; </span><span $select34</span>->from('table')->order(<span array</span><span ( </span><span new</span> Expression('isnull(?) DESC', <span array</span>('name'), <span array</span>(Expression::TYPE_IDENTIFIER)), 'name'<span )); </span><span //</span><span 'SELECT "table".* FROM "table" ORDER BY isnull("name") DESC, "name" ASC'; // join with Expression object in COLUMNS part (ZF2-514)</span> <span $select35</span> = <span new</span><span Select; </span><span $select35</span>->from('foo')->columns(<span array</span>())-><span join</span>('bar', 'm = n', <span array</span>('thecount' => <span new</span> Expression("COUNT(*)"<span ))); </span><span //</span><span 'SELECT COUNT(*) AS "thecount" FROM "foo" INNER JOIN "bar" ON "m" = "n"'; // multiple joins with expressions</span> <span $select36</span> = <span new</span><span Select; </span><span $select36</span>->from('foo'<span ) </span>-><span join</span>('tableA', <span new</span> Predicate\Operator('id', '=', 1<span )) </span>-><span join</span>('tableB', <span new</span> Predicate\Operator('id', '=', 2<span )) </span>-><span join</span>('tableC', <span new</span> Predicate\PredicateSet(<span array</span><span ( </span><span new</span> Predicate\Operator('id', '=', 3), <span new</span> Predicate\Operator('number', '>', 20<span ) ))); </span><span //</span><span 'SELECT "foo".*, "tableA".*, "tableB".*, "tableC".* FROM "foo" ' // 'INNER JOIN "tableA" ON "id" = :join1part1 INNER JOIN "tableB" ON "id" = :join2part1 ' // 'INNER JOIN "tableC" ON "id" = :join3part1 AND "number" > :join3part2'; // // 'SELECT "foo".*, "tableA".*, "tableB".*, "tableC".* FROM "foo" ' // 'INNER JOIN "tableA" ON "id" = \'1\' INNER JOIN "tableB" ON "id" = \'2\' ' // 'INNER JOIN "tableC" ON "id" = \'3\' AND "number" > \'20\'';</span>

PHP terutamanya pengaturcaraan prosedur, tetapi juga menyokong pengaturcaraan berorientasikan objek (OOP); Python menyokong pelbagai paradigma, termasuk pengaturcaraan OOP, fungsional dan prosedur. PHP sesuai untuk pembangunan web, dan Python sesuai untuk pelbagai aplikasi seperti analisis data dan pembelajaran mesin.

PHP berasal pada tahun 1994 dan dibangunkan oleh Rasmuslerdorf. Ia pada asalnya digunakan untuk mengesan pelawat laman web dan secara beransur-ansur berkembang menjadi bahasa skrip sisi pelayan dan digunakan secara meluas dalam pembangunan web. Python telah dibangunkan oleh Guidovan Rossum pada akhir 1980 -an dan pertama kali dikeluarkan pada tahun 1991. Ia menekankan kebolehbacaan dan kesederhanaan kod, dan sesuai untuk pengkomputeran saintifik, analisis data dan bidang lain.

PHP sesuai untuk pembangunan web dan prototaip pesat, dan Python sesuai untuk sains data dan pembelajaran mesin. 1.Php digunakan untuk pembangunan web dinamik, dengan sintaks mudah dan sesuai untuk pembangunan pesat. 2. Python mempunyai sintaks ringkas, sesuai untuk pelbagai bidang, dan mempunyai ekosistem perpustakaan yang kuat.

PHP tetap penting dalam proses pemodenan kerana ia menyokong sejumlah besar laman web dan aplikasi dan menyesuaikan diri dengan keperluan pembangunan melalui rangka kerja. 1.Php7 meningkatkan prestasi dan memperkenalkan ciri -ciri baru. 2. Rangka kerja moden seperti Laravel, Symfony dan CodeIgniter memudahkan pembangunan dan meningkatkan kualiti kod. 3. Pengoptimuman prestasi dan amalan terbaik terus meningkatkan kecekapan aplikasi.

Phphassignificantelympactedwebdevelopmentandextendsbeyondit.1) itpowersmajorplatformslikeworderpressandexcelsindatabaseIntions.2) php'SadaptabilityAldoStoScaleforlargeapplicationFrameworksLikelara.3)

Jenis PHP meminta untuk meningkatkan kualiti kod dan kebolehbacaan. 1) Petua Jenis Skalar: Oleh kerana Php7.0, jenis data asas dibenarkan untuk ditentukan dalam parameter fungsi, seperti INT, Float, dan lain -lain. 2) Return Type Prompt: Pastikan konsistensi jenis nilai pulangan fungsi. 3) Jenis Kesatuan Prompt: Oleh kerana Php8.0, pelbagai jenis dibenarkan untuk ditentukan dalam parameter fungsi atau nilai pulangan. 4) Prompt jenis yang boleh dibatalkan: membolehkan untuk memasukkan nilai null dan mengendalikan fungsi yang boleh mengembalikan nilai null.

Dalam PHP, gunakan kata kunci klon untuk membuat salinan objek dan menyesuaikan tingkah laku pengklonan melalui kaedah Magic \ _ _ _. 1. Gunakan kata kunci klon untuk membuat salinan cetek, mengkloning sifat objek tetapi bukan sifat objek. 2. Kaedah klon \ _ \ _ boleh menyalin objek bersarang untuk mengelakkan masalah menyalin cetek. 3. Beri perhatian untuk mengelakkan rujukan pekeliling dan masalah prestasi dalam pengklonan, dan mengoptimumkan operasi pengklonan untuk meningkatkan kecekapan.

PHP sesuai untuk pembangunan web dan sistem pengurusan kandungan, dan Python sesuai untuk sains data, pembelajaran mesin dan skrip automasi. 1.PHP berfungsi dengan baik dalam membina laman web dan aplikasi yang cepat dan berskala dan biasanya digunakan dalam CMS seperti WordPress. 2. Python telah melakukan yang luar biasa dalam bidang sains data dan pembelajaran mesin, dengan perpustakaan yang kaya seperti numpy dan tensorflow.


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